Malicious PDF — malware analysis report

Static analysis result for SHA-256 685208a0488eb6af…

MALICIOUS

PDF

47.3 KB Created: 2020-08-06 13:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e27a3bd07c4e9935a6e7840cf12abb5 SHA-1: a062c0e5e993f0a4ecc212b7990ca18cbf8256bf SHA-256: 685208a0488eb6afcab8b72824bf3566ff037a0b6ddd78d9d1c115dcc3418c45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains text related to 'free pdf' and a URL that is part of the malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=les+avantages+du+sport+pdf In PDF document text
    • http://tiwudo.fivetimesfamous.com/uploads/1/3/0/7/130775795/difodegogazetepuriju.pdfIn PDF document text
    • http://files.maggieduffinporcelainandglass.com/uploads/1/3/1/8/131871740/xupekexolejibikiwo.pdfIn PDF document text
    • http://files.teethwhiteningmonterey.com/uploads/1/3/2/6/132696335/5cde3.pdfIn PDF document text
    • http://files.pozaproject.org/uploads/1/3/0/7/130739043/vafam.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/1/0433/0618/8955/files/ready_player_one_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/midorepusopuzuwowop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/47160608120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/amar_ujala_news_paper_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/luxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/58881843789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/beautiful_creatures_2_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/31495401010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1473/9352/files/42622781042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamawogedeveredu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/sigukosudubesajofopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/comcast_channel_guide.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5B 5012 bytes
SHA-256: 1febd5f9804a4ef4546fb6e7214cab11c9a270aaf322bc11e9c8a48d34a4af67
font_01_sfnt_off00007d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D73 11244 bytes
SHA-256: 12b640fe4a52df062ad044e1384379c3b629a564d75a739488591f86a7b8a88f
font_02_sfnt_off0000a0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FB 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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