Malicious PDF — malware analysis report

Static analysis result for SHA-256 127cbbf65a1dd437…

MALICIOUS

PDF

38.2 KB Created: 2020-08-06 18:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3574ec0161307a5e389c930958d483df SHA-1: cafcd8e3a35c8e08552bb8afd969fb9fa6974f03 SHA-256: 127cbbf65a1dd43778cdfaf26ca02521ff1f5dcda96ff46c648b2ce6e9477c7f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic generation. One of these links, however, redirects to a known malicious domain (ttraff.cc), indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=jeffrey+archer+heads+you+win+pdf+download
    • http://files.wellspringyoga.net/uploads/1/3/0/7/130775257/gagipatolarekaronaf.pdf
    • http://files.agnieszkajaworek.com/uploads/1/3/0/7/130739450/5628614.pdf
    • http://files.inbheardeeac.com/uploads/1/3/0/7/130776487/948b2a3611.pdf
    • http://files.thehillcroft.co.uk/uploads/1/3/0/9/130969129/vipuxumad-pidawosadore.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/chava_kadambari_free_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/78769939992.pdf
    • https://cdn.shopify.com/s/files/1/0435/4346/2037/files/latelu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/etiologi_autisme.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/55463867010.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/biometria_hematica_valores.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/65711232329.pdf
    • https://cdn.shopify.com/s/files/1/0438/7723/6904/files/desh_bhakti_par_geet_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/28425059464.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/99580934834.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/2281441452.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/buninetijalalixori.pdf
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/jitejezatelo.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_off000055d6.bin
2bd013196126cc28b9b9bdfb18a92af4c63e156011bda6d669dd7c5548bedff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D6 5424 bytes
font_01_sfnt_off00006863.bin
58c21989abde2fcba55187878d63522a190e919b2d2d9647a53538255e4a4c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 10276 bytes

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