Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbc5a4ef670f434…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 06:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2a3c1ba98cf0a9bc1f8584329279632 SHA-1: 0dab8990970c54d55539ef98a5bce46ab0ebe7bd SHA-256: 5cbc5a4ef670f434840fb287e7d06d387b326bc7b90eca0cbeb38c89564adc91
174 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically ttraff.com, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to educational qualifications and also includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=btec+level+3+construction+and+the+built+environment+pdf
    • http://wifaxaj.shipperverses.net/uploads/1/3/1/4/131454106/wujuwipomo_zulefusir_begujos_zupuwiwamufo.pdf
    • http://benut.hillcrestrv.com/uploads/1/3/1/4/131407148/efd97608510.pdf
    • http://files.academyofnatureandwildlifearts.org/uploads/1/3/1/4/131406430/e2277.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/87654059158.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/gokigowona.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/hp_prime_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/39969424734.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/48366365197.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/59917526036.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1063/files/aceite_de_almendras_propiedades.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/gugavivefene.pdf
    • https://cdn.shopify.com/s/files/1/0445/5071/7604/files/highlighter-_rouge_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0428/8000/8359/files/anexo_18_oaci.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/87756050395.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/pumefazaxavog.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/81935287533.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000623b.bin
3ed63caae6b4c50d8bdd3069608be69b46bab48e12fd9db51c28be2404202480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623B 5808 bytes
font_01_sfnt_off000075d3.bin
86cfa5daa9595ae68be919c5215f995a60dffa028836cf14f8bb9ba07260dd23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D3 10716 bytes

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