Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cbc8f026fa1f38…

MALICIOUS

PDF

52.5 KB Created: 2020-10-09 05:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ae57f391272ae9221d8502b98a5a3d18 SHA-1: 74645eca58bdc8cfaf5a212ddaade875091d4e30 SHA-256: 62cbc8f026fa1f38b7e2d0aaff533146776973bb87a0da5cc19d93aac0a29ab3
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains keywords related to property management and the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to attract victims. The ML classifier also strongly indicated maliciousness.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/pify?keyword=mangold+property+management+in+monterey+ca In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4330/9726/files/best_naruto_quotes_funny.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/court_appearance_required_nj_traffic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6420/0868/files/my_dream_home_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9797/2629/files/56683116017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/jobavofutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0438/5686/files/rijesomemup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/hotmail_emails_disappeared.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1670/4159/files/ffxii_barheim_passage_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd013bc-19de-4ef2-a359-9e061431946d/99479722215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/376ae905-3d4b-485a-92cb-de0ed296c03e/51288605981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6676357-db99-4fd7-bf3f-80ce663cb4a9/sibufovugobuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a0a2f12-dac3-4fee-a557-e6875e24f8bf/tepaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b179b589-7f64-43cf-83d2-2842a963cb59/25229377977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91e9966-6ef2-4fd0-af49-b4681ccee1fb/38776268844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ebd163-f8f9-45c7-a14d-67ffbe137ced/dolodalujudizetarijamij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f298fe8-9514-4c65-8e5a-f7c5fcba2b78/78439400393.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E86 5320 bytes
SHA-256: ff7067992de2240280d39dea2d71bf3a9592f51b5c05bf3dca0a24970d132d1c
font_01_sfnt_off0000a0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A2 10480 bytes
SHA-256: ac7e2566c537fc011261885bba4793d7fe7685f5ce1ceed798db61bf67a4ddbe

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