Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e171e2d48a343e…

MALICIOUS

PDF

44.6 KB Created: 2020-08-09 09:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5bf787c16eff3a01484b5775330fa65b SHA-1: aaa606e8050db49cbe32dd9093ef869f799c10af SHA-256: 84e171e2d48a343e8eb092885145c251158e7e2b2111cce9a3a176abcc890372
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous other PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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.ru/pify?keyword=al+quran+ul+kareem+pdf+dawateislami In PDF document text
    • http://files.plainfieldgirlscouts.org/uploads/1/3/0/8/130874205/soniwosikusema.pdfIn PDF document text
    • http://files.melissaward.com/uploads/1/3/1/3/131383549/lotorosote.pdfIn PDF document text
    • http://files.fitnessbyfortitude.com/uploads/1/3/1/4/131453051/degurugavometomino.pdfIn PDF document text
    • http://nojijekan.northwood-ptsa.org/uploads/1/3/0/8/130874359/2297026.pdfIn PDF document text
    • http://files.elizabethalsobrooks.com/uploads/1/3/2/8/132814241/d538e5c6.pdfIn 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/1/0434/7697/5768/files/symbols_used_in_editorial_cartooning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/simepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/64644311883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2866/7798/files/shinedown_greatest_hits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/52385307039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/1998_ford_f150_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/57104942809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/worogizareloti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/rejovapuwidewodevatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9065/6921/files/rarefomesoninorudip.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000566a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566A 5456 bytes
SHA-256: dc403fa4acf4b85d50f5cea27f1ba4e5d016c663759af25bc332dbf072f4f400
font_01_sfnt_off000068fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 10648 bytes
SHA-256: 0f06adf9c3f9c70da22484874bb915ed1479639777814ddd7f0e47fdc5813813
font_02_sfnt_off00008d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D95 16796 bytes
SHA-256: 8e009ae25be6758fac5e1c6527d57145e1709c79826d1489f465278ae6f0c312

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