Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1462a01774b5d2…

MALICIOUS

PDF

45.2 KB Created: 2020-08-05 16:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 936dc57a258c017ef31514b47c8e1216 SHA-1: dabe32c48de041a89860c6f3ee854f9cc0684c1b SHA-256: aa1462a01774b5d2074bb3669c476f5df45a27a389f2a8fc60f9b7c33f29c89b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=everything+about+effective+communication+pdf+free+download', which is likely intended to lead the user to a malicious site. The document body contains garbled text but includes the same redirector URL and several Shopify URLs, reinforcing the link farm and redirection attack pattern.

Heuristics 3

  • 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.
  • 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=everything+about+effective+communication+pdf+free+download
    • http://files.aloe4care.com/uploads/1/3/0/9/130969592/1091340.pdf
    • http://jamedaluk.evolutionmeetings.org/uploads/1/3/1/0/131070722/9ad4719b427cb0.pdf
    • http://dabis.chrisruston.com/uploads/1/3/1/3/131384284/9322538.pdf
    • http://files.egatecoc.org/uploads/1/3/2/6/132695392/rikuno-kuzoko-dafewadogiwit-tikojeke.pdf
    • http://files.kensettia.com/uploads/1/3/1/4/131437680/kokibipunakuko-paziluf-gepekupamimabup-tadodukudixod.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/astm_a351_cf3m.pdf
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/36683000029.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/16235922513.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/ichirin_no_hanna.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/synonym_for_savior.pdf
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/critical_reading_and_writing_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/51070068441.pdf
    • https://cdn.shopify.com/s/files/1/0435/5692/9687/files/faxizesetejobomega.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/lulozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/99565535272.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/81679662773.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b3.bin
a3195e01fddf06da37a8bdd921d6eb3f0b7e28caf47b92a2064d21fd67a67d88
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 5744 bytes
font_01_sfnt_off00007d34.bin
1335569a8c29a92d029b4ad3f0db7041643531fcf55328e9cfa3347863951011
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 13412 bytes