Malicious PDF — malware analysis report

Static analysis result for SHA-256 6567609505cd339b…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 14:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88c9a00d165db350f5554b97cb61625c SHA-1: 68901ee06a2ffab10fb6685c2c6e2c93a0cac310 SHA-256: 6567609505cd339b20542012e3ba29661c0c902325609f6135f5815a1c8e71a8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, https://ttraff.com/pify?keyword=nutricion+alimentacion+saludable+pdf, which is designed to lead users to further malicious content. The document also hosts a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or scam attempt.

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=nutricion+alimentacion+saludable+pdf
    • http://files.globalprofessionals.biz/uploads/1/3/1/4/131437318/e853f915e5.pdf
    • http://files.somethingforsam.com/uploads/1/3/1/3/131384656/3756984.pdf
    • http://files.drandrewlukaris.com/uploads/1/3/2/7/132712315/gitopamofapo.pdf
    • http://files.sportworkschiro.com/uploads/1/3/0/7/130740458/9141824.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/9829/0856/files/14895652688.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/naxef.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/fegim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/44155294241.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0437/5943/5928/files/pabadunanimogetisatal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/97011565230.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/vebosijuzejevokefipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/74921257144.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/89428622297.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/soromujo.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006060.bin
d5d49a807764148dbc67d6eca26374f7d919483ed4a9ca81873178d4ac8c9a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 1572 bytes
font_01_sfnt_off00006863.bin
3520f52e6f26fe516beb97bd08e002bdcbb7b2e3e55ddf9a3c68812abc46a43a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 5412 bytes
font_02_sfnt_off00007aae.bin
882d10c5933a11bde80a39015cec0c8eac8d13fe2c59cb047a515ec48850acd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10304 bytes

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