Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f913e9f67b2c579…

MALICIOUS

PDF

43.9 KB Created: 2020-08-23 21:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e429cf755b2c6f31d0e3e9a85300d000 SHA-1: 51dfd3b8989dea590b2eabaf9e6eb1bf35b4796c SHA-256: 4f913e9f67b2c579241acdcf3d5cec4a7a77b3bdf25878735270faebb37afda2
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, appears to contain the same lure text as the redirector URL, suggesting an attempt to disguise malicious activity as a legitimate document. No scripts were extracted from this sample.

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=3d+printing+understanding+additive+manufacturing+pdf In PDF document text
    • http://rilag.steadfastleaders.org/uploads/1/3/2/8/132815806/6310961.pdfIn PDF document text
    • http://xikomisob.soubustafarms.com/uploads/1/3/0/7/130775350/satezunivin-wojavilafino-muperu-bipuwegefaluw.pdfIn PDF document text
    • http://files.marleyrosereads.com/uploads/1/3/1/4/131407465/koxeripagufaru.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/1/0431/6951/3632/files/tomojojorum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/lebugazuzase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/sunobiwula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1271/6704/files/88419021329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/tiwumaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/judonowutaguto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/40636026680.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 6

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_off00005ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFB 5344 bytes
SHA-256: 5a73a65791434505df65d5f43f2f0adb972e3c22eec5fbf23006f33cc66a79b3
font_01_sfnt_off0000720f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720F 10140 bytes
SHA-256: 13c098647dfcb51c9d63389de2a1fa7ea1bc1337353b950ff260591c089dc006
font_02_sfnt_off000094b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B5 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.