Malicious PDF — malware analysis report

Static analysis result for SHA-256 be89d510f06bc2e2…

MALICIOUS

PDF

38.3 KB Created: 2020-08-16 20:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a8f24eea9ce07fe1f2a9856c3df9db2 SHA-1: 3635993fa49318a6b099bd4fd1535cc00eea685f SHA-256: be89d510f06bc2e2349b38ba4113129a79235f6da5aced0fd3dbce2ef5668d21
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm with multiple embedded URLs, one of which, https://ttraff.cc/pify?keyword=my+answering+machine+song, is identified as a malicious redirector. The presence of numerous links, many pointing to Shopify-hosted PDFs, suggests an attempt to manipulate search engine results or distribute malicious content through a seemingly benign document. The ML classifier strongly supports the malicious nature of this PDF.

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=my+answering+machine+song
    • http://files.sewinstyle.net/uploads/1/3/0/7/130775728/sifuzidudegi-fapotewo-pimulabomaf-kasezixeroz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/2014_jeep_grand_cherokee_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/91116389595.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1480/files/free_amharic_dictionary_software.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6967/files/53315830902.pdf
    • https://cdn.shopify.com/s/files/1/0444/0332/7142/files/diablo2_lord_of_destruction_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/zobuleruxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/62093667570.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.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_off00005815.bin
9cae1c04afe068dca208583d5a8e75c8e8b85ff3c078344075ebde45760b34e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5815 5380 bytes
font_01_sfnt_off00006a4c.bin
e9267ce81f00ac3e49f4b7b754c1d38cef8e5e728f679e6e48dce3dd4924f36f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 10208 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.