Malicious PDF — malware analysis report

Static analysis result for SHA-256 8021d310dfcabf56…

MALICIOUS

PDF

44.3 KB Created: 2020-08-25 21:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8b871bb2af198bf0ea6747bb5b95780 SHA-1: 52f99ef6198a1c1488f0853249622b9086f45c60 SHA-256: 8021d310dfcabf569397deb9f19b18778e4d56ec1af3a9f141aaa9d64261e754
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains text related to a game download and a URL that appears to be a lure for free downloads. The presence of a malicious redirector and a link farm suggests an attempt to drive traffic to malicious sites, likely for malware distribution or phishing.

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=wolfenstien+2009+download In PDF document text
    • http://zowavu.declanwrynn.com/uploads/1/3/0/8/130873782/ruwep.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/1/0431/4241/4487/files/translation_reflection_rotation_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/71430973421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7786/9476/files/rebezenubawitev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3897/2831/files/21847495361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/danny_boy_flute_duet_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/657_220-_1619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/jeregiluxip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/75827419974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/vemoxomazepisuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/trendmile_rcksendung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7308/5078/files/new_bollywood_movies_hd_1080p_free.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 1

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_off00005c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5128 bytes
SHA-256: 685aa9e80572c80a5cdb3531d8114e398813aad07832c423bc2bb371f94575ba
font_01_sfnt_off00006dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFD 14656 bytes
SHA-256: 716adaf862a3c2e106c5f72f67f8add79cdb83709000e9cc69c1dae5ab71e347
font_02_sfnt_off00009697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9697 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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