Malicious PDF — malware analysis report

Static analysis result for SHA-256 0906d3a03125bd35…

MALICIOUS

PDF

42.2 KB Created: 2020-09-11 21:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9575648fa84231c83b1853059015ef6 SHA-1: 958ee44d7475b343d3b9de3a523b40bcd3890975 SHA-256: 0906d3a03125bd35b1d5f861407d6f93cce6991771d867bc74166c1a50f840fd
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body also contains text that appears to be a lure related to 'gallery lock apps com' and includes a URL to a Shopify-hosted PDF. The presence of multiple external PDF links suggests a link farm, a common tactic for SEO poisoning or distributing malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pify?keyword=gallery+lock+apps++com
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/24032673123.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/pezut.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/mupupavojepepujemu.pdf
    • https://static.usrfiles.com/ugd/493135_ad4717b5135343b1a74b8725095ef75c.pdf
    • https://static.usrfiles.com/ugd/b8c837_da3724f3216541148d9ee4d495fea753.pdf
    • https://static.usrfiles.com/ugd/c2007e_46eeed3b096b4aae8722ad89eeb32575.pdf
    • https://static.usrfiles.com/ugd/fef373_cd78b596303b42179cae3d10374410a3.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9021/files/film_boboiboy_terbaru_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/judezajat.pdf
    • https://cdn.shopify.com/s/files/1/0463/2752/9633/files/tanatologia_catolica.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0444/0273/7318/files/2001_vw_beetle_repair_manual.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_off000066fc.bin
1120a6870835c64bea9f8d6f9e619a0e32c88cf33fae5da8d34edd39b16085e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 5276 bytes
font_01_sfnt_off000078e9.bin
a6763d4caedf5bdf604c1cbf35c482e679c966ababe54d3fbe0b9534cec51291
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E9 10356 bytes