Malicious PDF — malware analysis report

Static analysis result for SHA-256 2630c88eb877069b…

MALICIOUS

PDF

61.2 KB Created: 2020-08-04 07:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7123be00a520720156b04e7e7750524 SHA-1: f74a49325aac7630292fa414e7cdfb19a371b89e SHA-256: 2630c88eb877069ba57f849923c471f028ee257bf30bc9805781098814e57e48
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm. One of these links, https://ttraff.cc/pify?keyword=como+funciona+o+sistema+renina+angiotensina+aldosterona+pdf, is flagged as a malicious redirector. The presence of visible command execution instructions suggests the potential for further malicious activity, possibly involving PowerShell or similar tools, though no specific script was extracted to confirm this.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=como+funciona+o+sistema+renina+angiotensina+aldosterona+pdf In PDF document text
    • http://files.vnchha.com/uploads/1/3/1/3/131378950/8558967.pdfIn PDF document text
    • http://files.tephracurlycoatedretrievers.com/uploads/1/3/1/4/131407028/pemodupalo-dawazakinawu.pdfIn PDF document text
    • http://files.tcars.info/uploads/1/3/0/7/130739116/2999115.pdfIn macro / runtime command snippet
    • http://files.escaperoom.solutions/uploads/1/3/1/8/131858540/xipewatawekep.pdfIn macro / runtime command snippet
    • http://files.henfieldcameraclub.net/uploads/1/3/1/4/131407635/bufoku_filadegakofu_risoxitiled_godepafujebata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/standard_catalog_of_smith_wesson_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/60242561635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/45742110282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/46687654046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/lozosuraxisow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/patoxada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8064/5782/files/popek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/43814057619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/toxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1067/9203/files/gemejojaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/97843874416.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 5380 bytes
SHA-256: ca5e32966ba7ed9e223652e2f7cf65b70e8bfffd052db5d3d57ba8f932a43e36
font_01_sfnt_off00009d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D75 11068 bytes
SHA-256: 78ba4bc2130a2281df2f4898693f71b313ff93454206d3d8244ac38d75fccbf7
font_02_sfnt_off0000c1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1E2 16116 bytes
SHA-256: 717860a409c70c4bfddc50d2fdcdfdb4d009a247daa781d27df3057258cb1b21
font_03_sfnt_off0000d6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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