Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f74e0ae6d57f2e5…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 16:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2889ad39baaa9600aa38c938369251dd SHA-1: 79953fc76e073f3ac14b53ff5391049698c9a84c SHA-256: 9f74e0ae6d57f2e5d9039dc4ad47648f337bc0aad9475feeeef5573392a0d029
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=avery+template+5160+pdf', which likely serves as a lure. Another heuristic detected a large PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the true malicious destination. The document body contains garbled text but also includes the malicious redirector URL and several Shopify URLs, reinforcing the link farm tactic.

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.ru/pify?keyword=avery+template+5160+pdf
    • http://bonijewom.constancewoods.com/uploads/1/3/1/4/131406717/bemolu.pdf
    • http://fuzutet.phoenixvillexc.com/uploads/1/3/1/3/131398140/rudibila.pdf
    • http://files.teaboks.com/uploads/1/3/0/7/130776673/bifaxajukubaxi-wefegojuro-mixoroja.pdf
    • http://files.lornarenefineart.com/uploads/1/3/0/7/130776033/7246026.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/neloxonepopamika.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/53873916976.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/eliseu_martins.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/18409189363.pdf
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/2312072145.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1142/files/33319700147.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/52590683703.pdf
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/boss_rc3_manual.pdf
    • https://cdn.shopify.com/s/files/1/0452/6263/5168/files/kashmir_banega_pakistan_speech_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9735/7472/files/how_to_create_new_branch_in_github.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9560/files/63319908311.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/navovaxagit.pdf
    • https://cdn.shopify.com/s/files/1/0440/4445/1990/files/behavioral_finance_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/7379/7285/files/23178378539.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000585f.bin
e33b547d83123e4310270081c1409a5e281322cd4aa6ebcd88aa10e82f892185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x585F 5156 bytes
font_01_sfnt_off000069fe.bin
6e6c6c0b08b81dd5e17b581d0d1216ab44b883dd624b5a2d7f0bb456c8ca7cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FE 10060 bytes
font_02_sfnt_off00008c76.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C76 4324 bytes

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