Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8f650e021c935c…

MALICIOUS

PDF

48.9 KB Created: 2020-08-17 08:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70a2551ea912844d6b0bcdeca20cdc43 SHA-1: ecdffe9398e103fc4dd3e1b867af72b2c8247cee SHA-256: 8b8f650e021c935c705a057ddb75e463ddeda567c300c2edc33a2b906fd8ee6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bitlord+old+version++for+mac'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely used to mask the malicious redirector. The overall intent appears to be social engineering through a deceptive link.

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.cc/pify?keyword=bitlord+old+version++for+mac In PDF document text
    • http://nafivul.ontoyouresale.com/uploads/1/3/2/8/132814930/gejipa.pdfIn PDF document text
    • http://files.fairfaxgammaphibeta.org/uploads/1/3/0/7/130739713/vazuganete.pdfIn 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/1/0430/9018/2304/files/jinonipiwetul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/formation_pour_auxiliaire_de_vie_scolaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4579/5493/files/bsc_cbz_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/zedisenigaxixofidobopunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/59305888435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9208/9763/files/67026764403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/miller_and_levine_biology_textbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/395667921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/multivariate_time_series_analysis_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/18905980193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/gidifetedeni.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000786c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786C 5276 bytes
SHA-256: c6c368f0d617f84a9e13dfb5c77764d491c1b29be65b6ff0236dd2c7de83713c
font_01_sfnt_off00008a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4A 13940 bytes
SHA-256: 72a9694d06a8dd4c571203763b61edc26799959a777a54391cfa1dbc2a4a9fd2

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