Malicious PDF — malware analysis report

Static analysis result for SHA-256 43753a50400f8953…

MALICIOUS

PDF

39.3 KB Created: 2020-08-09 23:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 016aecc14ea8834775e266c4ade9b5ed SHA-1: de29162e712d4d9f0c596197a45ce814b291a308 SHA-256: 43753a50400f8953c6344df3885833b8040118b49f3ad975702de20e030c012c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and keywords suggesting a lure for technical documents. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attack.

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=aws+certified+solutions+architect+associate+exam+pdf In PDF document text
    • http://files.friendshiptoday.org/uploads/1/3/0/7/130776499/dejofutinuka.pdfIn PDF document text
    • http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.pdfIn PDF document text
    • http://files.spiritualrealmconsulting.net/uploads/1/3/0/9/130969065/mafabaganonad.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/1/0433/0687/7080/files/minirefotapobizezuloxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/everything_tye_tribbett_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/22811132756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/5453575974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/343894683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/92392454467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/wekusonexetinuranimusiset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/27098881775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6904/6935/files/ffxiv_shirogane_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/fososigewawuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8429/9934/files/vulegilavip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2127/5033/files/qualities_of_good_money.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/95924677501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7360/9636/files/84078301283.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A71 5544 bytes
SHA-256: 1e34006f25ef632e00af54a7a03349ff27315d867e12861f44988bb191092bea
font_01_sfnt_off00006d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3D 10104 bytes
SHA-256: e148ebe7bcbcdd324d1dd19abfd990e3f2b4399c30df1a48b8dadd1013d74bcb

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