Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bacbeebfaad0c7…

MALICIOUS

PDF

45.2 KB Created: 2020-08-25 01:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4078f424f020d33cacaaf84a1428672 SHA-1: 0ab8fd20d6592518d9c1b661892b435f7546f3c3 SHA-256: 74bacbeebfaad0c7abf0327076b2bdf49f9f97be4f3f760a637fddc8f8794519
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics as a malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution.

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=game+dev+story+direction+guide In PDF document text
    • http://files.hairstunt.com/uploads/1/3/1/6/131606128/66de19bf6281c.pdfIn PDF document text
    • http://files.louandlila.com/uploads/1/3/2/7/132712373/4249391.pdfIn PDF document text
    • http://zeduvul.thewolfofwaverlyplace.com/uploads/1/3/1/4/131437549/4609358.pdfIn PDF document text
    • http://zipejisuk.richmondbulldogs.org/uploads/1/3/1/4/131438110/d5edfa380.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/1/0428/7945/1295/files/40946780431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/chronicles_of_darkness_condition_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/57480082087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2591/4262/files/les_carbamates_insecticides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/nirarit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/sagifilokifalalabenuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/minavalimefalire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/95514126859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/az_movies_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/632585748.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000705b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 5420 bytes
SHA-256: 69a9a7fb3cd91b825a25cddb5ae7069fb859e01c4738307da88a6ac309e926b1
font_01_sfnt_off000082ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 11140 bytes
SHA-256: 8d44a8ab47c12b3313aebcf00cf1fe3da16f5b6f7e5a6c3874951547e7614151

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