Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c48563381f05ca3…

MALICIOUS

PDF

46.4 KB Created: 2020-08-03 23:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc9be7fe1f451f53cf38563ede25b535 SHA-1: 41b0313a2477456eb70829cd45dbc3cd683f3255 SHA-256: 6c48563381f05ca339564910c51113ee22b2ba83f5d4d6f62d1f115868fcfd7c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as automotive market research. The document body also includes a large number of links to various PDF files hosted on Shopify, likely an attempt to create a link farm for SEO purposes. The ML classifier strongly indicated maliciousness.

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.cc/pify?keyword=automotive+market+research+pdf
    • http://files.cowboycookinwickenburg.com/uploads/1/3/2/3/132302923/piweja.pdf
    • http://files.crossfitwestgeist.com/uploads/1/3/1/3/131384374/rewafejugug.pdf
    • http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdf
    • http://xeribapel.irishcelticstudio.com/uploads/1/3/0/8/130813420/6c56d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/4643158326.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/french_demonstrative_pronouns_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/84475161195.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/gifex.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/superman_minecraft_skin.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/xafulomubajokinokozikati.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6181/files/66650181744.pdf
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/13108022744.pdf
    • https://cdn.shopify.com/s/files/1/0438/0341/0593/files/fopibugirusuxajuvuvuguba.pdf
    • https://cdn.shopify.com/s/files/1/0435/2085/2122/files/6683639245.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/56247592769.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7599/files/94482594951.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_off000068bb.bin
5bd476edc667c65f37bd7fed5fcac6d9b1d4c1e0ba6c9794512b818741933cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 5252 bytes
font_01_sfnt_off00007aa3.bin
e5c606fb9a3c4b426ed87f0703be8a5af3b848371c817a8bcde7309a0c372ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA3 10572 bytes
font_02_sfnt_off00009eb6.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB6 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.