Malicious PDF — malware analysis report

Static analysis result for SHA-256 196ca74b33a4f326…

MALICIOUS

PDF

52.9 KB Created: 2020-07-26 06:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc38ed300d05a0f5b755283b6739dffa SHA-1: fbfa532542f29524d8fca698d628091f213cd7d2 SHA-256: 196ca74b33a4f326ac5548abab8575fae00e48a9db95366b52c985cf53391c3c
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), indicating a malicious intent to redirect users to harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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=cherry+mobile+flare+p1+lite+firmware
    • http://files.gravitysuccess.com/uploads/1/3/1/0/131070799/de11ec.pdf
    • http://files.lutoncentralmosque.org/uploads/1/3/0/7/130775917/7395398.pdf
    • http://files.bethlehem505.org/uploads/1/3/0/7/130775400/patupojafo-xegupoxezetorox-tesutejesev-vasinufip.pdf
    • http://files.ilovesmiley.com/uploads/1/3/1/4/131407029/193758.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vojinanekarab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/xukejusekodiremixasek.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/papulabowowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/korixorudamixedawirajetud.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/wusurazivutaxuxed.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/barazo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/mukazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/86709355599.pdf
    • https://cdn.shopify.com/s/files/1/0429/0363/4079/files/wevexifizakepugajevig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.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_off00008cbc.bin
19cc48ea767cad0c9ec56ba85db48e1e3f2d788fa4d248c31c2ab4995c4783c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBC 5056 bytes
font_01_sfnt_off00009e05.bin
5ea3a3c040c2ba02fb039b3a08d4b7ec9c9caa84be9c1c690c531cc0b833676d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E05 12636 bytes