Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7b1f29b906c221…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 08:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e2afaa472970fa38f5d51adb2b125b5 SHA-1: 482984a5bbf8c15a4b722cfd1ec31cb55e01d9f4 SHA-256: 0a7b1f29b906c221452280212a0e42ecb8647c39cfa2b106221763421c458664
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=x+men+days+of+future+past+yify'. The document body and embedded links suggest a lure related to 'X-Men Days of Future Past', likely to disguise a phishing or malware distribution attempt. The presence of multiple external PDF links, many generated algorithmically, indicates a link farm strategy for SEO poisoning or distributing further 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=x+men+days+of+future+past+yify
    • http://files.phonekeysystems.es/uploads/1/3/1/8/131871814/fejinelefeviz.pdf
    • http://files.supernaturalentertamitedproductions.org/uploads/1/3/1/4/131455883/visemomitowezij-fezaweku-xevut-kixivim.pdf
    • http://files.myeaglerestoration.com/uploads/1/3/1/6/131606027/8733516.pdf
    • http://files.crossfitchalmette.com/uploads/1/3/0/7/130776861/32825.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/wagukepokodotabeguxaxukez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71895705060.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/loxowokoguvixazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/how_to_unlike_something_on_facebook.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/rodapegiso.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/pelarurini.pdf
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/central_alpherafs_com.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/guwebisujafubepazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/kexefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/28984771631.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_off000067c2.bin
8e2dfdbf837efdac7deda5872c5c76a8a4edbd6f1bc86c255004f03b9ae8aeab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C2 5236 bytes
font_01_sfnt_off0000797f.bin
24feb9b720ccd2ad8f725fa09e8344e053f52f62df94f6fcea5c07964692a491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 10852 bytes

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