Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6d05c2ab75b9bd…

MALICIOUS

PDF

44.7 KB Created: 2020-08-23 20:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67b463317bfe040db0ccee6551f3e9c3 SHA-1: 200f626be9611733cd2f17bc94228a0a51bd1f81 SHA-256: ab6d05c2ab75b9bdf8a3cceeea9b6302f4289cd53db8e1f0b38213c64863fb66
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'basic excel spreadsheet tutorial' and includes the malicious URL. This suggests a social engineering lure to redirect the user to malicious content.

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=basic+excel+spreadsheet+tutorial In PDF document text
    • http://gapoto.redwood4h.org/uploads/1/3/0/9/130969525/nanuva_xofol_zurobuxelupete_jodidabitito.pdfIn PDF document text
    • http://files.hoothootpost.com/uploads/1/3/2/6/132682282/5709165.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/1/0431/2091/8679/files/72075688781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/nofotanamulitifosarokasit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/70658323677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/metirifiwike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/best_bodybuilding_app_android_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/62679902982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9974/1596/files/vokokulisiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/99522261102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/fitexigovulosojegisinow.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 5052 bytes
SHA-256: 76207a4992cf5a14debee4a9ac5d0ab292f552a17d1b76b1499f842b871986a4
font_01_sfnt_off0000746e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 10452 bytes
SHA-256: 5a2a4e3629d7de0a590090bef5cb0dbe0a38d430592ef96fe80efe67cdc7ba73
font_02_sfnt_off0000981a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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