Malicious PDF — malware analysis report

Static analysis result for SHA-256 77f4f0d07571243b…

MALICIOUS

PDF

55.5 KB Created: 2020-08-01 17:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c464048be2fb66acc7920a1d4b7c403 SHA-1: 0aa637756893b8be1ca911cbffc02f9d7a11f17b SHA-256: 77f4f0d07571243b87ea87a14f600651a0cd5fcfe15d83de59b2d6a140ebae6d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure for free content or secrets, aligning with phishing or malware distribution tactics. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=love+chronicles%253A+secrets+revealed In PDF document text
    • http://files.beachcitysmoothies.com/uploads/1/3/0/7/130740044/bojazodutasus.pdfIn PDF document text
    • http://files.stirene.org/uploads/1/3/1/8/131871555/dixirulerelu_rizatizel_pewigogezoseli_tewos.pdfIn PDF document text
    • http://files.gabgains.com/uploads/1/3/2/6/132681992/9747334.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/1/0430/2667/7913/files/busad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/23797396989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/65418864337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/64029549209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/60760183697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/dimetivapidaxikogaxuxet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/surubisezivumumukuripad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3294/3519/files/349317128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1173/3664/files/juderikovatekarevis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/lusinubudipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/datidiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/45159561007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4669/8146/files/68025351049.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 1

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_off00008d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D72 4864 bytes
SHA-256: d11ac39cb434a9d9b0b25b47611d9713be0a48f51be340a5c9fe393db008dd11
font_01_sfnt_off00009dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEE 10676 bytes
SHA-256: 93d2490617a463f173f9c81dca198d629e201c55d74173ecab0ebe8b80322c49
font_02_sfnt_off0000c278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC278 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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