Malicious PDF — malware analysis report

Static analysis result for SHA-256 1166c614de62b825…

MALICIOUS

PDF

42.8 KB Created: 2020-07-31 22:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9fe5b571039a594a464c83f28516f8e SHA-1: 36a09445b8f195cf7673073fa542c81481aadbda SHA-256: 1166c614de62b82597904703876a4f316f23c703df62b601614743f0a0cad438
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, ttraff.com, which is likely used to lure victims into a phishing or scam page. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, suggesting an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attack.

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=converter+lb+to+kg
    • http://files.geraldamcdermott.com/uploads/1/3/0/7/130740130/e9d44b121120f53.pdf
    • http://files.rawfoodforlife.org/uploads/1/3/0/9/130969742/paxezegep.pdf
    • http://files.kempenichcounseling.com/uploads/1/3/1/1/131163666/088ed11b7.pdf
    • http://files.phoschol.com/uploads/1/3/0/7/130776809/kilexelonopogedet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/69718555086.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24221046066.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/pdfill_tools_11._0.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/3452390596.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/sujozubi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/76284068827.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/jufuwuwuzifivebuvakewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/jagivulubapanebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/68153391821.pdf
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/53551493744.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8567/files/bazunigufemavejeradumefop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/ketajolababimepaneweparuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/15736877507.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_off00006a37.bin
d8e6f3b6b974c386dac5d2f2b622a14d0e064db7256c6a91e2f0a7e346ad198d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A37 4632 bytes
font_01_sfnt_off00007a17.bin
df29d689ce2b0d7682f234c10267d079c779d76bf13270e25444ce1deaa43a9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A17 11112 bytes

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