Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4314b10a78fa6a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 15:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c8c18d30fd8e1a550623876b8762696 SHA-1: bdcaa04e41fe01f6ad9cd6717715ea775016cb80 SHA-256: bf4314b10a78fa6a66d0d9b83c3f2b8f10e842e31d6016b9f300dcbdef404a6a
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous external links. One of these links, pointing to 'ttraff.com', is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware. The presence of a large number of links, many hosted on 'cdn.shopify.com', indicates a potential link farm or SEO poisoning tactic to increase visibility.

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=%25D0%25B1%25D1%2580%25D0%25B0%25D1%2582%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE%25D1%2582%25D0%25BE+%25D0%25BD%25D0%25B0+%25D1%2587%25D0%25B5%25D1%2580%25D0%25BD%25D0%25B8%25D1%258F+%25D0%25BA%25D0%25B8%25D0%25BD%25D0%25B6%25D0%25B0%25D0%25BB+%25D0%25BA%25D0%25BD%25D0%25B8%25D0%25B3%25D0%25B0+9 In PDF document text
    • http://files.communityactionboonewinn.org/uploads/1/3/2/6/132681293/78b0fb1ed6.pdfIn PDF document text
    • http://mapipelu.animalcarefoundation.org/uploads/1/3/2/7/132710621/bujuwexepifod_mafitofu_xezigoxafidu_rabej.pdfIn PDF document text
    • http://files.rebeccasheraton.com/uploads/1/3/1/4/131405977/pezix-woxezapug-menedin.pdfIn PDF document text
    • http://files.ourvillagefarmacy.com/uploads/1/3/0/7/130775892/fudivimoniden.pdfIn PDF document text
    • http://zexowoza.putitbluntly.org/uploads/1/3/1/0/131071252/sibegoke-fugalat-nizufag.pdfIn PDF document text
    • https://ttraff.com/pify?keyword=%25D0%25B1%25D1%2580%25D0%25B0%25D1%2582%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE%25D1%2582%25D0%25BE+%25D0%25BD%25D0%25B0+%25D1%2587%25D0%25B5%25D1%2580%25D0%25BD%25D0%25B8%25D1%258F+%25D0%25BA%25D0%25B8%25D0%25BD%25D0%25B6%25D0%25B0%25D0%25BB+%25D0%25BA%25D0%25BD%25DIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/bartaman_patrika_today_all_pages_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9111/6700/files/bhakti_dj_song_new.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/97124176332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/2013_acc_aha_cholesterol_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0129/8589/files/angular_5_tutorial_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9749/6477/files/kered.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/24967176756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5266/8830/files/command_line_tools_mac_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/61676599869.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 5872 bytes
SHA-256: f7346bf244882871c84fd7e69b2797a2913740f04114f8af6df5786300a78906
font_01_sfnt_off00007163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7163 14292 bytes
SHA-256: c73126ef4ae1ac1839319f7d69fb4c470850d53e3dda9fc7ef1397d2d2e7ba10