Malicious PDF — malware analysis report

Static analysis result for SHA-256 67510314fdc42185…

MALICIOUS

PDF

42.5 KB Created: 2020-08-14 01:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14808262501f38d10f79f1d3e392b681 SHA-1: 49d82f1485ecb744392ac198b8c1e04d973ab683 SHA-256: 67510314fdc421855b2d0a0c01a056c4282df17f14ab9665b21edad0a5209231
162 Risk Score

Malware Insights

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

The PDF contains a link farm with 30 external PDF links, many of which are hosted on Shopify. The primary link, however, redirects to a malicious URL (ttraff.cc) which is likely part of a phishing or malware distribution campaign. The document body text and embedded URLs suggest a lure related to 'artificial intelligence for IoT' to trick users into clicking the malicious link. No scripts were extracted, but the PDF's structure and embedded links strongly indicate malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=hands%20on%20artificial%20intelligence%20for%20iot%20pdf%20download
    • http://files.justinlambmusic.com/uploads/1/3/0/7/130775049/radufitufubagux.pdf
    • http://files.southamgallery.com/uploads/1/3/2/3/132302963/5468970.pdf
    • http://duleve.foodfightdenver.com/uploads/1/3/1/6/131637419/gasofakotuxisulas.pdf
    • http://files.harrietlevinmillan.org/uploads/1/3/1/6/131607164/tamotu.pdf
    • http://files.suitlandhsfeasibilitystudy.com/uploads/1/3/1/6/131606159/1611714.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2627/6771/files/49865083806.pdf
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/37027707734.pdf
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/10945660174.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8838/files/fan_blade_design.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/woxupexopubujuviruja.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/murasoxilubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/zulamonero.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/holy_bible_in_bengali_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/19380657704.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/1368972283.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/download_converter_bmp_to.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_off000067f2.bin
c7aad0e498db69ede887f7640dbf836cf5ed556f90ea8604af2f1888c4f493a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F2 5376 bytes
font_01_sfnt_off00007a5a.bin
354b4f17a8ae099e567f0528a424c32ed83490269858fda717793d2400bd15f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 10000 bytes

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