Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fbae4ad10664f5…

MALICIOUS

PDF

40.0 KB Created: 2020-08-26 18:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e787822ffff4e15c4793b3a43c2eaea7 SHA-1: f567d0876788f853b8f5e9be2fac0b53a1f0b128 SHA-256: 47fbae4ad10664f59685f7efbdcd83a9945e5f01ce7c757b34959be6cbfd728f
154 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 pointing to 'https://ttraff.cc/pify?keyword=sea+doo+aqua+ranger+canada'. Additionally, it features a PDF link farm with multiple external links, including one to 'https://cdn.shopify.com/s/files/1/0436/2698/7680/files/mokexizenonudupejulixitaw.pdf'. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL and several Shopify URLs, suggesting a lure to external 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.cc/pify?keyword=sea+doo+aqua+ranger+canada
    • http://files.phoenixrunners.ca/uploads/1/3/1/4/131407144/ca4ac12282dd7.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/mokexizenonudupejulixitaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/soundtrack_abyss_drama_korea.pdf
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/1401589182.pdf
    • https://cdn.shopify.com/s/files/1/0449/3682/2939/files/mental_health_first_aid_australia.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/nopeteno.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/advantages_and_disadvantages_of_tv_advertising.pdf
    • https://cdn.shopify.com/s/files/1/0436/5231/7342/files/ridupefawezuzisujemivewi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/58534001503.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/what_is_bitterness.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/kozujafesebakirefu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f1d.bin
98699afa8811aa352ff9b04d40dfb3dd1e42273e8b61df042b5d1d5f016bf6f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1D 4880 bytes
font_01_sfnt_off00005f9c.bin
19ace559f5544be10204d74170881d9b7edf76d6ffd42a3f109486be75986f98
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 11060 bytes
font_02_sfnt_off00008574.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8574 4324 bytes