Malicious PDF — malware analysis report

Static analysis result for SHA-256 1932255b4b9579c8…

MALICIOUS

PDF

52.6 KB Created: 2020-08-12 19:30:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: db4d9f2e96199f5619dabcc27eb57b5f SHA-1: f42848d981790ad8f927189cec3577110257c162 SHA-256: 1932255b4b9579c8c2ea7688eb50f82dd21c8320adf87856d61158f28d62375f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a PDF about accounting standards, likely a lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, potentially for phishing or malware delivery.

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.com/pify?keyword=accounting+standards+in+telugu+pdf In PDF document text
    • http://files.la-iphonerepair.com/uploads/1/3/2/8/132816096/fizev-sisif-fimat.pdfIn PDF document text
    • http://files.atllead.com/uploads/1/3/1/6/131606758/refoligizanoj.pdfIn PDF document text
    • http://dawajisel.tanyasdanceco.com/uploads/1/3/1/4/131406717/sitigubo.pdfIn PDF document text
    • http://files.adventuresinmomjeans.com/uploads/1/3/1/4/131482867/didujof.pdfIn PDF document text
    • http://files.friendsofmaduraiseed.org/uploads/1/3/2/3/132303373/9549937.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/1067975841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/13980549203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/machine_learning_stock_market.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4265/1805/files/40961200803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/gubatakefuduxanujimup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/tofacitinib_alopecia_areata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/kepatugonawamomemusof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0028/2785/files/lexus_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2102/files/17365387056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/62515425366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3641/5899/files/pivabowenopexavukofozej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tebagomi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 5312 bytes
SHA-256: f7deb45aa7342a3c1621071a0b9ed2af26dc009c3db06e902a6ceefb015a4c18
font_01_sfnt_off000089ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FF 4448 bytes
SHA-256: 186dcba2cd7b190972215ac891cc94c2066108bb7a5840c8bb05ed72f46ee9e5
font_02_sfnt_off00009a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A81 12528 bytes
SHA-256: 83b60944b7ed1aac3bc60d457d6973542fe68c38a4e6d0a1a19d7827f7b92b9f

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