Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bfdcc0a598c1e6c…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 09:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1057c10d701fdd86803d5a2e43c8e297 SHA-1: 86314f4c1b1d87ba5929fa4642812a7d29894d23 SHA-256: 4bfdcc0a598c1e6c2b5a6814251e3cba76901cdb48aaa3125c149ecf92f4f879
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to direct users to further malicious content. The document body, though partially corrupted, contains text related to 'pmay awas yojana form pdf' and the malicious URL, suggesting a lure to a fake form. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm strategy to potentially improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=pmay+awas+yojana+form+pdf
    • http://files.jesuschristreturning.com/uploads/1/3/0/8/130813054/7845636.pdf
    • http://files.c-pag.com/uploads/1/3/1/8/131856584/sidetaxakiv_garekude_bolom.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/essential_oils_pocket_reference_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/idsa_septic_shock_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/28971443143.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/sanyo_sound_bar_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8220/2782/files/nutevudelazatalasomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6091/9461/files/lavenders_blue_dilly_dilly_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/lezasunusev.pdf
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/embroidery_designs_images_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/delivery_manager_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/9762/8576/files/risevetelevudumadumig.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/fenuvavuz.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/
    • https://cdn.shopify.com/s/files/1/0431/9762/8576/files/risevetele

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ef.bin
74b552139ac2a671f66a2b66beeb41a825080b7a170fea599860ee0b092eeeb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 5428 bytes
font_01_sfnt_off00007a68.bin
d249ba04af3d587ce03e66a565a7e8fca5d4235664fa8ccbe08ebca3903e0b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 10244 bytes
font_02_sfnt_off00009da6.bin
2355ad28b020441fbfba8be73c989bf7267c98cb59e3a6f645a17f63b5e81b84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA6 5604 bytes

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