Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7244344f20556b…

MALICIOUS

PDF

56.6 KB Created: 2020-08-18 17:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6958cb1415b05de0e54d62984ea35931 SHA-1: 7f1b012a2d4c47274ddfff89a65faec44642b0cf SHA-256: 6e7244344f20556bdcf9ca1f4cec880e8936aaa952df76b1c9883eba55d93bc1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a search result. This suggests a phishing or scam attempt to direct users to malicious infrastructure. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation or to obscure the malicious link. 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=adverse+reaction+to+metformin+icd+10
    • http://files.alysjonesillustration.com/uploads/1/3/0/7/130739147/12770383.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/engineering_guidelines_1-_3-_3_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/52588109555.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/71769503850.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/ramikamel.pdf
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/21187905995.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/unstoppable_high_kick.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/7528577899.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/fufabinolisegiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/4810/6134/files/bhagavad_gita_story_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4756/7003/files/bach_bwv_578.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7057/files/zotasodunijubu.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_off0000965e.bin
1fdc28682421bded812f2fc19a2d025da56a56778ba3b7a8fb7808d0c5022c90
pdf-font-stream PDF embedded font (sfnt) at offset 0x965E 5380 bytes
font_01_sfnt_off0000a894.bin
c1156017262b4a3811753428c71cdbae559bd9550e34515d2d2b5e4dc9f3ad66
pdf-font-stream PDF embedded font (sfnt) at offset 0xA894 14536 bytes