Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ef1c1bb4f4e902…

MALICIOUS

PDF

50.2 KB Created: 2020-08-18 23:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d05dc54dd0fc0a23dc071548de974296 SHA-1: cd98679a0034a7d0d189e117754a7dfbda19d06a SHA-256: f0ef1c1bb4f4e9026e36b1091e7c3a908f9f71cc5f0447f38c5b9591e5c110ab
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=certificate+templates+pptx'. The document body, though heavily obfuscated, also contains this URL, suggesting an intent to drive traffic to malicious infrastructure. The presence of multiple PDF links and the ML classifier's high confidence score further support the malicious classification.

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.com/pify?keyword=certificate+templates+pptx In PDF document text
    • http://penufawem.unlimitedpotentialstl.com/uploads/1/3/2/6/132681647/7313179.pdfIn PDF document text
    • http://boxiri.sspres.org/uploads/1/3/0/9/130969335/fijonifefitus.pdfIn PDF document text
    • http://xowar.iamrogerwebb.com/uploads/1/3/1/4/131482952/vusoxajuxote_kepezawi_rurilarek_situl.pdfIn PDF document text
    • http://files.thenerdshelves.com/uploads/1/3/0/7/130738596/wiwomifube-xerefiluk-zitilar.pdfIn PDF document text
    • http://files.sterlingsfiberglass.com/uploads/1/3/1/4/131453436/tizakutobafedewumor.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/1/0431/3979/3050/files/wupipegemulajuvapip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/jinedobumubufedikem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/14652130060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/interrogative_adjectives_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/9863725687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/75216629451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9504/files/28717009401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/80437825269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/laxidumefow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4248/8998/files/14653536263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/39037494693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1154/7036/files/rofobamiremefizaze.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_off000078c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C2 4824 bytes
SHA-256: b73c05e2cecfae5afcb99a2f6bf80d4270b864de75c4467498eac982c202dafc
font_01_sfnt_off00008928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8928 10860 bytes
SHA-256: 7930a9036ba0eae1c84a422081e94315871901d5aaec4723be4f3d374ba11db1
font_02_sfnt_off0000ad35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD35 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c