Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d95ba34c1dce94a…

MALICIOUS

PDF

185.9 KB Created: 2020-08-15 05:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c271979777dc8fcb0abcb3fb99952a5 SHA-1: ac35fb78b4946d798d86136c8267ad7ac1bb5cda SHA-256: 7d95ba34c1dce94a2ce4402770883872387da269321c05458ab2e5bd4beb84c5
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, https://ttraff.ru/pify?keyword=transformers+g1+characters+autobots, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to lure the user to a harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=transformers+g1+characters+autobots
    • http://jefob.lglministry.org/uploads/1/3/1/8/131856917/jigubiwij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/2015_mustang_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/26465901095.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/3780266639.pdf
    • https://cdn.shopify.com/s/files/1/0453/6303/6315/files/57948163997.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/20091038470.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/1690913682.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/zuvanojuvuwemad.pdf
    • https://cdn.shopify.com/s/files/1/0447/2075/0745/files/the_new_boyz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/wuloduvituborufonov.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/xetitijujedanos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/united_airlines_gate_information_sfo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/wexigamasofakagegap.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/41146681143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028cfb.bin
3a3ab9ee19939239502f0ae60455506651e77ee493843422132742354f439b64
pdf-font-stream PDF embedded font (sfnt) at offset 0x28CFB 6132 bytes
font_01_sfnt_off0002a1f8.bin
42bf354047988b95f84499f8127fc9318048cb1c92a823cdcf95512b59138700
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1F8 5404 bytes
font_02_sfnt_off0002b435.bin
f5ce5f7ffadaa9fecb0046b7ea646879613ae84775e8362fbbe3ac8d03c81bb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B435 10940 bytes