Malicious PDF — malware analysis report

Static analysis result for SHA-256 347a906450feb283…

MALICIOUS

PDF

52.8 KB Created: 2020-08-06 11:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2d3430ed7b40375027c75339292c868 SHA-1: a58e24c3a432fc2d68d31252c5c0efc21c7f33c7 SHA-256: 347a906450feb283dffb65bc15c09a0fa39a28add62436fec441e039cdf01b95
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though partially obfuscated, includes the target URL and references 'wkhtmltopdf', suggesting it was generated programmatically to host these links. The ML classifier strongly indicated maliciousness, and the presence of numerous links to Shopify domains, many of which are benign, serves as a camouflage for the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=definicion+de+caida+de+tension+pdf In PDF document text
    • http://files.youngsdiscountbridal.com/uploads/1/3/2/3/132302941/rumegovubosogisan.pdfIn PDF document text
    • http://files.danielahdz.com/uploads/1/3/1/8/131871786/ba2361b4dcdac.pdfIn PDF document text
    • http://files.katiecoldrickyoga.com/uploads/1/3/1/0/131070374/2f216.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/bubawumutikagoxanoxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/ejercicios_present_perfect_simple_just_yet_already.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasukeseduvemuledup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/zuniropasaxega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/autonics_sensors_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/zemax_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/35607311234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/zupekolilakotebew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0306/8068/files/14963511836.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

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8251 5020 bytes
SHA-256: f98494f9370c8944160051d688211498a806a1f284ccf7ca50a62b470281802d
font_01_sfnt_off00009389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9389 16272 bytes
SHA-256: a5b74dd6eb57cf9eebfd5ade10bb5bc2ea7b488375ff8fa898bc1735f0160b2c

Open this report in the interactive analyzer, or submit your own file for analysis.