Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c37782d42f8fe8d…

MALICIOUS

PDF

40.0 KB Created: 2020-08-13 03:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69cbe6f830a477f3af5ff071a4dbb738 SHA-1: e460cf918fa112bddcd8cb45176b0972466e2712 SHA-256: 7c37782d42f8fe8d920d74321827f3d7496996c5979141c786ccc6df7e92088f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, and exhibits characteristics of an advance-fee scam. The document body, though obfuscated, contains text that appears to be a lure for a "molecular genetics full book pdf". The presence of many external links, including to Shopify domains, suggests a link farm or SEO manipulation tactic to distribute the malicious content. No scripts were extracted, but the overall structure and embedded links point to a phishing or scam attempt.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/pify?keyword=molecular+genetics+full+book+pdf
    • http://rasaluse.aztecroguefoodsllc.com/uploads/1/3/1/4/131407406/c21b45e48e3a76.pdf
    • http://files.techlab17.com/uploads/1/3/1/3/131380005/2598534.pdf
    • http://nejaza.decoloresfarm.org/uploads/1/3/2/6/132695569/397a52.pdf
    • http://files.petersknifeshop.ch/uploads/1/3/1/8/131872017/kagitogif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/58366918725.pdf
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/74055515865.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/kezalubapilazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5114/files/12098795853.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/xavaxezuralu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1756/6368/files/10667684851.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/30_qualities_of_an_entrepreneur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/fadopekijidedode.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/vuxirijaxonudezokudukel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/gagorajiga.pdf
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/numpy_divide_matrix_by_vector.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/xavanixugujur.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_off00005c5d.bin
e9a7b0a92b0bb95b09c9728e3e99a896c4c7259c5d963f6046f54f78827e90a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5D 5532 bytes
font_01_sfnt_off00006f41.bin
ec89a2c52b67e7368a10b317451760fc140d370bafc47c154069974ec15bba98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F41 10516 bytes

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