Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8711de4060b141…

MALICIOUS

PDF

51.6 KB Created: 2020-08-09 04:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f24e4e3e99a1fca97e4b9da0948699b SHA-1: fbd2eddba0d06897faf6df1ef400f6d3f9cb8f0e SHA-256: ae8711de4060b14109ca0d0f2b74d3bd69bec13009e743351b035d0ef71ecfa3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.com. The document body, though partially corrupted, suggests a lure related to a book summary. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination. The primary attack pattern involves tricking the user into visiting the malicious URL.

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=dilemma+of+a+ghost+summary+pdf In PDF document text
    • http://files.pocketinstructor.co.uk/uploads/1/3/0/7/130738993/vowapadijup_nadatufupabe.pdfIn PDF document text
    • http://duxizazod.cityskyflooring.com/uploads/1/3/1/4/131453109/nefifenakeleva-mebibofojeleka-vagetavavig.pdfIn PDF document text
    • http://jogetajox.theuglymugs.com/uploads/1/3/1/3/131380485/wikagok.pdfIn PDF document text
    • http://files.coyleparker.com/uploads/1/3/0/8/130874324/veradereraduzuv.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/1/0432/0670/5316/files/nolejefojifaredakenef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/9005/files/nakejafuvevebom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/pukakazukumep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/78814882891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/57725622610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/agilent_hplc_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/jevumexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/jigebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9452/2518/files/litabotogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/rizufizileloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4344/files/jelidenugenejalavupogaber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/learn_japanese_workbook.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7E 5556 bytes
SHA-256: e2e485afb4ea518844ffe25109f102dc98c7820faff83a5296c9296c022dc165
font_01_sfnt_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 10248 bytes
SHA-256: cd2e1746ef9464c293b4d0c1fd7cee8ba2b3d23da39df2ef2e698a42fe85188f
font_02_sfnt_off0000a289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA289 19608 bytes
SHA-256: 4d7f92d3b57a202160909f035ae3fc5ff12124f39f067b5d551c5aa0129cff68