Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4ead2b937bff2a…

MALICIOUS

PDF

46.5 KB Created: 2020-08-06 11:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc4eba22790ec7a8586da3c37982cfe6 SHA-1: a3eb53a9c64945f0e17d497a8986fd289bb1ac8d SHA-256: 0d4ead2b937bff2a1c8e2b7ecb3f4fa33892bb63c3ac6b5876652beb10db3734
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though obfuscated, contains text suggesting a lure related to an economic outlook PDF, and the redirector URL includes a keyword matching this theme. This indicates a likely phishing or malware distribution attempt via a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=bahrain+economic+outlook+2020+pdf In PDF document text
    • http://files.tswb-apa.net/uploads/1/3/1/6/131636654/9585090.pdfIn PDF document text
    • http://files.julescritchinson.com/uploads/1/3/2/6/132681556/4994332.pdfIn PDF document text
    • http://files.tubietsai.com/uploads/1/3/1/8/131871951/4755292.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/didelukuwiviketeduke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/9782062975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/45830135713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/gadisasejofokigedek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/ordeal_by_cheque.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/2608314516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/knight_rider_heroes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/fonowidewixavuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/mifirolunomivig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/pumebafideza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/wcf_test_client_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/23578649200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/how_to_rename_a_file_in_linux.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5484 bytes
SHA-256: a6d1f5514625126599f74cef9e66e4c300c23d3928bdabe4f54fd6f9e9a525bb
font_01_sfnt_off00007ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD5 10568 bytes
SHA-256: efa4b85a02f0ee422cc3a4986947ab2c2161598770d9248ae9eca044dc286fd8
font_02_sfnt_off00009ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361