Malicious PDF — malware analysis report

Static analysis result for SHA-256 518fd74fff7ac450…

MALICIOUS

PDF

41.2 KB Created: 2020-08-13 22:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ea6fa886b3db9783d2973f23ffc0782 SHA-1: 9923cf2b39aac2e35d461e2237e10851662c91a1 SHA-256: 518fd74fff7ac450d0767acc9f8ded5687da591948d131f78e2dcf46c169662d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Armani underwear size guide' and the malicious URL, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking and distribute the malicious link. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=armani+underwear+size+guide
    • http://files.radovansebesta.com/uploads/1/3/1/3/131379382/7434261.pdf
    • http://files.bassriverchiropractic.com/uploads/1/3/0/7/130738892/gepigisavawam-mugafeli.pdf
    • http://zagovemul.christophermcmullen91.com/uploads/1/3/1/4/131407406/wewaketulipi_wotob_tiwap_melazusejok.pdf
    • http://files.blockhashpodcast.com/uploads/1/3/2/6/132696117/fojizu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/dermatitis_acneiforme.pdf
    • https://cdn.shopify.com/s/files/1/0429/4583/9271/files/sleeping_at_last_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/lijarerakolajagubepuganu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/61691064633.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/30895615488.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/sample_email_for_sending_resume.pdf
    • https://cdn.shopify.com/s/files/1/0448/3589/7505/files/bangla_natok_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9970/9855/files/answer_key_flyers_1_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/35367875390.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/jovumetaxipux.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_off00006357.bin
e077aded03f5a9bfd967d52981fb166ffbb9dfd573aa40142020a20942ae1ef8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 5244 bytes
font_01_sfnt_off00007524.bin
ef95f53793a1d971daa5252ee65b6f42c1ecff9335d7b73e6b3f46a333fdd336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 10684 bytes

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