Malicious PDF — malware analysis report

Static analysis result for SHA-256 60695f9a96289a40…

MALICIOUS

PDF

50.5 KB Created: 2020-08-23 19:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82f50055457c06163e5ffabe7da0f072 SHA-1: 14014c1940678d43f282dc3caed39ee17a142010 SHA-256: 60695f9a96289a40a5bed1c335b6c8132c28d8f7c01760556964b05d3f2ca148
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, also contains the same redirector URL. This suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The presence of numerous external PDF links, many pointing to benign Shopify domains, indicates a potential link farm or SEO manipulation tactic.

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=call+sheet+meaning+in+telugu
    • http://files.irsoro-art.com/uploads/1/3/1/6/131606346/pepujopun.pdf
    • http://files.galwayveterinaryhospital.com/uploads/1/3/2/8/132814343/7421018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/64397468953.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/19167624656.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/rukagolaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/kitazewuwab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/lewaguvosobufirunipora.pdf
    • https://cdn.shopify.com/s/files/1/0433/7762/3201/files/azure_lane_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/88367490240.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/xijovasimal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/difatuzopidobukeb.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_off00006b82.bin
09843a30586826a447e016ea702cc60591f37c03794449652b82f4079f807f1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B82 4908 bytes
font_01_sfnt_off00007c10.bin
be2432631364c45a6f212f368469d67ebe1f1490107a34e1395cd5c6a096abe9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C10 10412 bytes
font_02_sfnt_off00009963.bin
726a30e80bb5f3ce65c851c27f8c86b34454f9ed9cbee3d9bf51820e5774dd08
pdf-font-stream PDF embedded font (sfnt) at offset 0x9963 10516 bytes