Malicious PDF — malware analysis report

Static analysis result for SHA-256 7791ac6463dcaa7e…

MALICIOUS

PDF

43.7 KB Created: 2020-08-11 04:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8af23b501c2a1151965abcf3ceb04f0c SHA-1: 27d45bfee9e7b95d17c31217801e1a7db34c0cd7 SHA-256: 7791ac6463dcaa7e26bc80ed0d80731d98f2b2273dacbac6f53b6290399d6e0f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to known malicious redirector infrastructure. The document body, though partially corrupted, includes text suggesting a datasheet lure, which is a common tactic for phishing or malware distribution. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation attempt to disguise 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.cc/wb?keyword=8%20relay%20module%20datasheet%20pdf
    • http://files.southlinewaterfowl.com/uploads/1/3/1/4/131408027/6187361.pdf
    • http://files.aim-na.org/uploads/1/3/1/3/131383727/manomomuwoniri.pdf
    • http://files.larcomair.com/uploads/1/3/0/7/130775730/c453c832.pdf
    • http://files.enzymelabs.com/uploads/1/3/1/4/131438639/tafexijit_donej_xikav_gatutizusudine.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/aromaterapia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/gewovolutasofidonirabapej.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/how_to_bold_on_discord.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/81332228172.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/75481474240.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/78047967040.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/81338497306.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/sufujokotejopuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4789/4683/files/6903182640.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/rigilap.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/fumugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/petavolabegaxenegejetal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fa8.bin
5f03d2c6bc08d28d18892b3fd5153044a2fff6aad81dd629dfd07635bf6cf50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA8 2880 bytes
font_01_sfnt_off000069e5.bin
7206c00ed0bccc670030c7b424ec828e7e5c4058944b24703ef9b3c8e9510109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 5484 bytes
font_02_sfnt_off00007c69.bin
3621367d0d4277aeb13afaf529e3a815ca19f9d4b1d931f8126a10330414be7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C69 11836 bytes

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