Malicious PDF — malware analysis report

Static analysis result for SHA-256 6517aaeba8624e13…

MALICIOUS

PDF

45.9 KB Created: 2020-08-30 21:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08aec57cba02403cfaae8d63063f956f SHA-1: 538a01d603f3fa9d9906d20874d40493da0a85e4 SHA-256: 6517aaeba8624e132d3d83786ea91e33e543ab341e32e14e4e2d1635fa0e2d8f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, with a heuristic identifying it as a PDF link farm. One of these links, 'https://ttraff.link/wix?keyword=david+adragna+autopeople', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the identified malicious URL and other Shopify links, suggesting a lure or redirection mechanism.

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.link/wix?keyword=david+adragna+autopeople
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1747/7019/files/fepekame.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/71438458140.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4283/files/26006165977.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/pashan_bengali_movie_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/opera_mini_browser_free_cnet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/gopanuzoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/characteristics_of_a_good_research_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/ascus_papanicolau.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/fokidafeberidokodit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/mipiresipapipero.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/31731180116.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/86931715772.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_off0000753b.bin
1152d7afa60482c0d6b54229101b318921e2c9964b5b24d965ade193593df554
pdf-font-stream PDF embedded font (sfnt) at offset 0x753B 5008 bytes
font_01_sfnt_off0000865c.bin
239597daa858851f1715f2a63e25b43956e221c9295f729a408b54764626732e
pdf-font-stream PDF embedded font (sfnt) at offset 0x865C 10864 bytes