Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f52b71e0d691ad5…

MALICIOUS

PDF

38.4 KB Created: 2020-08-10 21:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1c1f13e6410803a9af05184518a03a2 SHA-1: a60244879fc5ac262312705d5707c839628064c9 SHA-256: 5f52b71e0d691ad58faf2a5a4cd63cf0fba74fdcd4713db7e1867210728e3a1a
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 (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a list of benign-looking PDF links hosted on Shopify, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier strongly indicates 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=alter+ego+b1+guide+p%25C3%25A9dagogique+pdf In PDF document text
    • http://files.letspaintarabic.com/uploads/1/3/2/8/132815123/lilezezedumisuvix.pdfIn PDF document text
    • http://files.flashfoto.com.au/uploads/1/3/0/9/130969489/60f779.pdfIn PDF document text
    • http://lazonefe.milagrodesignsantafe.com/uploads/1/3/1/6/131637419/5497978.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/1/0428/4389/8019/files/44378982041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/98508786421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/riwiwefudoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/gimipumexaperak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/dont_worry_be_happy_ukulele_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/livros_de_ortopedia_e_traumatologia_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/mixasamikafejaparijid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/65360150881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/5376273832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/comcast_tv_guide_seattle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/bibikoduwijaraven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2672/6568/files/artemis_fowl_eternity_code_graphic_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/7194462196.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 8

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_off00005619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5619 5480 bytes
SHA-256: 43a72d2647935a360e91e7b6bc6a3618ecf062c22e226d6dd93d82eaf9172ecf
font_01_sfnt_off00006883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6883 9956 bytes
SHA-256: ec2f96dbf3ca3833e7d7b7917a7415c2fa838128fc103b2be5ba1d1386f0f214

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