Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c5ef6eca331ff2…

MALICIOUS

PDF

32.0 KB Created: 2020-09-04 04:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70bb76d65f792470dbef17d51de65074 SHA-1: 621d4758ab5d2f1b44236b3e6349f467849265a3 SHA-256: 72c5ef6eca331ff2f1b0792931e32087b088c9c6920b66afb80a0bd697eff297
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.me'. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to improve search engine ranking for terms like 'company profile template free ai'. This suggests a phishing or malware distribution lure. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly indicate 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.me/pify?keyword=company+profile+template+free++ai
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/lisilazitekiputawiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/baverefivoxakiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/xufetizezoxedafuxas.pdf
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/julexovevo.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f39249348c1485287adc8aceca958ba.pdf
    • https://static.usrfiles.com/ugd/930050_31e2d3fec94e483fb351ada23c2e50a3.pdf
    • https://static.usrfiles.com/ugd/9219f8_f45a7d9ea8ed446b963c55f10b1dc159.pdf
    • https://static.usrfiles.com/ugd/10cedf_59a887b1b9a1473581ec62f9ef5101b4.pdf
    • https://static.usrfiles.com/ugd/739437_cd73942695124f6ba5c5e67a638e5599.pdf
    • https://static.usrfiles.com/ugd/b8c837_318d9d60230149fd8a31dac25c82c633.pdf
    • https://static.usrfiles.com/ugd/ab63e3_6da2f8b5081c4bdd80b013b8bcaacc89.pdf
    • https://static.usrfiles.com/ugd/c068f8_e8d27c7d95d949deaa7cadf47095654c.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/dafodol.pdf
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/zakavafuzobiwex.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_off0000431b.bin
1e120b1859add9beb48eeb7477ad88a93addbc4b6642ffddf42455590c2d5993
pdf-font-stream PDF embedded font (sfnt) at offset 0x431B 4876 bytes
font_01_sfnt_off000053a2.bin
00dc2e77b185afeb9269919b0b81bf565c38fe1d7d4856bd4c2a6f43eb28b9d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x53A2 9340 bytes