Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b170320cf859a0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-13 00:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f5cae89d1740d7c5eb6e8ac550fd0a4 SHA-1: 9a96cc6dbf390bf6889fa56c76ef9b1952ef8fd6 SHA-256: a0b170320cf859a066a7eab26b8cbdc1b17435923031b24c4f4a5cd126b9b52d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=the+candy+shop+war+pdf+download`. This indicates an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the lure. The presence of multiple PDF links suggests a link farm or SEO poisoning tactic to attract victims.

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=the+candy+shop+war+pdf+download In PDF document text
    • http://pusazivaw.fisimpson.com/uploads/1/3/0/7/130740510/7698613.pdfIn PDF document text
    • http://files.gabrielledeveaux.com/uploads/1/3/2/7/132740399/dasegewerugebi.pdfIn PDF document text
    • http://files.daynasdogsitting.com/uploads/1/3/0/7/130738806/bimuzoj.pdfIn PDF document text
    • http://files.gbwebtuition.co.uk/uploads/1/3/0/9/130969075/jajojubozepimube.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/1/0433/1290/6405/files/89230599780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/zewalun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/46509487769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/36801009135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/abstraktion_und_einfhlung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/winepadedazesusekina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/83068793983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/40238692500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/schistosomiasis_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/61451791552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/ponokudopogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/42542530935.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5001 5044 bytes
SHA-256: 90eedf39bdbba294566f18760df0f47618d9d91d87ee2739f58c8a919f9b5f86
font_01_sfnt_off00006126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 10024 bytes
SHA-256: feecc836c8394d244ab9a6ff8198c1810b8016e9c30a4473fba73a50547b224b
font_02_sfnt_off00008330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8330 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361