Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1de5aad0989f274…

MALICIOUS

PDF

46.5 KB Created: 2020-08-16 18:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 804a63b529bf42ac4e44da51bcae0f00 SHA-1: 4ab71a20b820b022e58f1052c5c0620d44551d2b SHA-256: d1de5aad0989f274dec3dd12d401b23e377ab850377b2cafc7943db7c05f5984
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector link, pointing to a URL that promises a free game download. This URL is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains the same malicious URL and a list of other URLs, suggesting a link farm designed to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=criminal+case+game+free++for+android In PDF document text
    • http://files.jimnewmanart.com/uploads/1/3/2/7/132740541/rijolu.pdfIn PDF document text
    • http://tuwemuju.aedt4200thesiscourse.com/uploads/1/3/0/8/130874359/jufuzusokoguguk.pdfIn PDF document text
    • http://files.kentuckywoods.com/uploads/1/3/1/3/131380558/5115602.pdfIn PDF document text
    • http://files.xtrmconstruction.com/uploads/1/3/1/3/131379622/fujitizuxuxamiw.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/1/0432/4504/3880/files/best_basic_english_grammar_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/vixomoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/zipimunazibufobada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3626/3078/files/sofazuwunokoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0763/9711/files/34418842154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7618/1398/files/mechanics_of_materials_7th_edition_beer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/xubodekarizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/3m_tape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/vozubujelogakanavil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2109/0471/files/konofedivumasatapus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/73103425772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/nuxebafebebanoxoziriv.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_off000077eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EB 5248 bytes
SHA-256: 907db0612e02baf89dda1e05a920559d70406b0c104318f0b95dea13a5d54645
font_01_sfnt_off0000899a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899A 10364 bytes
SHA-256: 16d54809fb3a71a2d74475c703e32747562474a24055167293183d742528990f