Malicious PDF — malware analysis report

Static analysis result for SHA-256 f047325e8967c784…

MALICIOUS

PDF

46.5 KB Created: 2020-08-19 17:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17b17c29dd6289aaad55841cbecc8e18 SHA-1: 7bd10de97428f15c614866e99328b43b442f1d61 SHA-256: f047325e8967c78473c61bcca2c8c79a73c8508df0475f312bc546a570407563
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to 'Avatar 2 3d free' and embeds numerous links, including a critical redirector link to 'ttraff.com'. This suggests a phishing or scam attempt to drive traffic to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, so the attack pattern is based on the embedded links and document content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=avatar+2+3d+free
    • http://files.nzosi.com/uploads/1/3/0/9/130969937/a9da67f30041d.pdf
    • http://files.lacombenajac.com/uploads/1/3/1/8/131856277/bc272.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/datow.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/abellio_greater_anglia_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46283819311.pdf
    • https://cdn.shopify.com/s/files/1/0440/1286/3638/files/aamir_khan_pk_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/59911818900.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/balanced_scorecard_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/jafabevemigibus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/62964535680.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/puwifilade.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/cottrell_critical_thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/exemple_de_bordereau_de_livraison.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/46994599211.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/35821732200.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/lebepufiledaw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bba.bin
794aeb4cc31f021b853172d6555ea09fa37b3d73cd7d1299f841a2e951ea53ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBA 4560 bytes
font_01_sfnt_off00007b43.bin
9a6387d6647d9617cdd24e45444f7a18c1cd1a71dab96248a3d8ada1d3d03735		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 10568 bytes
font_02_sfnt_off00009f61.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F61 4324 bytes

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