Malicious PDF — malware analysis report

Static analysis result for SHA-256 69affe159bfe1cc9…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 03:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 391b0fdf5f69a7e0e4aa1503e82a3591 SHA-1: 194541534cba35f8ce594e599cd18c6805d2c82e SHA-256: 69affe159bfe1cc9fcb7394f0833943608180c8c92d518872de5ea12e19944d2
154 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a high number of external links, many pointing to Shopify domains, suggesting a link farm or content hosting strategy. One of the primary links, 'https://ttraff.com/pify?keyword=resimde+hava+perspektifi+nedir', is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent, likely related to SEO manipulation or hosting malicious content. The document body contains garbled text and a URL, further supporting the malicious nature.

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.com/pify?keyword=resimde+hava+perspektifi+nedir
    • http://files.sobrightandbeautiful.net/uploads/1/3/2/6/132682542/vutit.pdf
    • http://moroser.biogeographyresearchlab.net/uploads/1/3/1/4/131407995/9824019.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/gubifimiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/69470402887.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/56437945684.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/92289560716.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/birthday_invitation_templates_printable_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/73794703331.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/31238684924.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/bedetemawikarogumurak.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/14332499571.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/handbook_of_software_reliability_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/bekusamuweliwa.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_off00005cfd.bin
fa06677c64dbcfd55a0369c930e23daca46c1d572a23bb4897f6414e335cc573
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFD 5380 bytes
font_01_sfnt_off00006f32.bin
8ea6f9ad3ce13ded2da49a851307419f63debad50f6c6132c1df9eb363d8db48
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 11412 bytes