Malicious PDF — malware analysis report

Static analysis result for SHA-256 980a1df854ef82a0…

MALICIOUS

PDF

46.2 KB Created: 2020-08-22 18:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3698c26b5bc169d8c87da94d14d394d1 SHA-1: e5145de411f28faeba68ce98923d955e220692cd SHA-256: 980a1df854ef82a0db2ffe963c6a080049a388c5382710f686b3c3f267b3562d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This indicates the document's primary purpose is to redirect users to a potentially harmful destination. The presence of numerous other links, many hosted on 'cdn.shopify.com', suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. 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=2007+dodge+caliber+manual+transmission+removal
    • http://files.gillisplayandlearn.com/uploads/1/3/1/3/131398006/2205577.pdf
    • http://files.goldenriverorchard.com/uploads/1/3/1/3/131384300/teziwudebomox.pdf
    • http://files.9thdtf.com/uploads/1/3/1/3/131381374/3333882.pdf
    • http://guvefap.ndsportschannel.com/uploads/1/3/1/3/131379478/wusogepesifefe-timevijatefa-tilijipozoki-xiwawaxariduki.pdf
    • http://bibena.idahoflyer.us/uploads/1/3/0/7/130775162/2422fb2fa34bf.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/99661843890.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/bevuzimeg.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/sap_data_services_4._2_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/25949326039.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/86309338130.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/92482200276.pdf
    • https://cdn.shopify.com/s/files/1/0434/3388/5846/files/age_discrimination_factsheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/nenodatuwogivu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/abnormal_psychology_17th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/77431018030.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007445.bin
1a7cd2d79efac49f1f8facade5ea16bfd0055dc93e7e461960a32e3770398c96
pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 5720 bytes
font_01_sfnt_off00008793.bin
c0617886c51c6d6152e9ce34dba95b9ffc267910b71a3e022322d1db69373319
pdf-font-stream PDF embedded font (sfnt) at offset 0x8793 10440 bytes