Malicious PDF — malware analysis report

Static analysis result for SHA-256 08fc974207bd4aeb…

MALICIOUS

PDF

53.2 KB Created: 2020-07-28 00:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e784e542c2a2af7c641cce120b52bb8f SHA-1: 6f2ef0c46ee4ec37a10bafad5ff5ba0d7b481cfa SHA-256: 08fc974207bd4aeb3c4ecb5b417daefdc381bbdcc570e0fec0086253d09bf752
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=allied+telesis+at-+8000s+48+manual'. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document body, despite being heavily obfuscated, likely requests sensitive recovery information. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=allied+telesis+at-+8000s+48+manual
    • http://files.fashinfidelity.com/uploads/1/3/1/4/131407045/25cad051e7b907f.pdf
    • http://files.newportgmc.com/uploads/1/3/1/4/131437530/4ff75.pdf
    • http://files.jaygrossproductions.org/uploads/1/3/1/4/131453498/f1dd7122e39d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/77463500764.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdf
    • https://cdn.shopify.com/s/files/1/0431/6017/4754/files/30209347723.pdf
    • https://cdn.shopify.com/s/files/1/0431/0132/3420/files/voroforedavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9255/files/95868124696.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/jelojunaropow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/dezapudogekufefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/9814335101.pdf
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/91788455043.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/kapezoxuxulolavekuwuwed.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/25565636489.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/lukosuwaronone.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/53750599829.pdf
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/4347943602.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/70531184013.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009120.bin
a3a08d793985732bde67d80a5a7aa5ff373983ea8748faf7916e617a17fe21e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9120 5092 bytes
font_01_sfnt_off0000a257.bin
57902991ad6be1b241dd3b66e0c906ac7262cabcb4c9b3c1f6633360064e2761		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA257 10804 bytes

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