Malicious PDF — malware analysis report

Static analysis result for SHA-256 1985e05d82fcfabf…

MALICIOUS

PDF

59.5 KB Created: 2020-08-10 14:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce4e9dab63ab535ab2f2c5f2937a2664 SHA-1: df40c3cdfed25f85e76836c98a1ea952a9ad9825 SHA-256: 1985e05d82fcfabf6acd93106280374bec347089ee581b497ba56b614b5bec30
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, including a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of a large number of links, many pointing to Shopify-hosted PDFs, indicates a potential SEO link farm or a method to distribute malicious content.

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.com/pify?keyword=adi+shakti+mantra+pdf
    • http://files.tlcbythelake.com/uploads/1/3/0/9/130969471/d4687.pdf
    • http://files.stonegatefl.com/uploads/1/3/2/6/132681501/gelaf_rewami_mibadopopolodap.pdf
    • http://duwuge.centerponddistrict.com/uploads/1/3/1/3/131398140/zugusakozasulewezus.pdf
    • http://relaxow.myowild.com/uploads/1/3/0/8/130814328/ferixetidawo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/zivonobareg.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/87413068325.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/4469439213.pdf
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/cable_pulling_tools.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/kovutawur.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/bewesarewavezomata.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/82927642209.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9429/files/67445954368.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/lolefakexadojuf.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_off00008f43.bin
7c1eba2eb6c35fb2f3c76d91b1ef9ae3ecc61c53f3715f854eb3b6ce7ab5db8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F43 5300 bytes
font_01_sfnt_off0000a126.bin
216b5391c82518c708778a83e97cc2a2b654255cbbda672186c7c48f3a82e8a4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA126 16232 bytes
font_02_sfnt_off0000d166.bin
d2f03344b73bf1169704ad8e33fd4b95141746587dafc3bfd51720ade20c1a51
pdf-font-stream PDF embedded font (sfnt) at offset 0xD166 3564 bytes