Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43a5192f3edbac8…

MALICIOUS

PDF

64.0 KB Created: 2020-08-22 20:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e431b1b95236237751dc0f8120b89a5 SHA-1: 432be95b00c61395769581c54001b56e086fa561 SHA-256: b43a5192f3edbac89ba7eb77ccbc17df063b87962945c17c2c4793e3d1ca7720
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One URL, 'https://ttraff.ru/pify?keyword=manualidades+navide%25C3%25B1as+paso+a+paso+en+foami', is flagged as a malicious redirector. Another embedded URL, 'http://vavanevap.allisonadelia.com/uploads/1/3/2/3/132303238/d65ad.pdf', is also present. The presence of a malicious redirector suggests an attempt to lure users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=manualidades+navide%25C3%25B1as+paso+a+paso+en+foami In PDF document text
    • http://vavanevap.allisonadelia.com/uploads/1/3/2/3/132303238/d65ad.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/1/0447/2812/3545/files/aaranya_kaandam_movie_tamilrockers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/jijototodimerew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/pengertian_guru_pendidikan_agama_islam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/automata_theory_cohen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/nuxuriwuxazirulizipiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/nudebawivofosuwegate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/gawexuxuxigal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/33450072993.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 4

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF5 5168 bytes
SHA-256: ad2ea6c3f25d7de7cbd29546f85ecd3dcabcfc8141fdb5e165558ad2a5163fe4
font_01_sfnt_off00009d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2E 2132 bytes
SHA-256: 63e783c03da57879afb775159473c506eb962ef38e1d93fd37c9511de6b0a0ad
font_02_sfnt_off0000a6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 11932 bytes
SHA-256: 9e2dcb6bd2eb70d941d83ea89ffc1f0894aa8e1dd7e092429aeb493b4457071a
font_03_sfnt_off0000cd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD27 16080 bytes
SHA-256: b505b0b78a03edf4fb956c728891bec86144e12ded48a11ec23002336feffae8
font_04_sfnt_off0000e1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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