Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf93e33041a50c67…

MALICIOUS

PDF

44.2 KB Created: 2020-08-14 22:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ce46c323142292491053782e02ebfdc SHA-1: 216685e1659e42eb6f8217c6c1e2e56721f8ee4a SHA-256: cf93e33041a50c677925fefb7c00cff426c481781c0cae6dc18bdef5c9519acf
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 firing indicating a malicious redirector. The primary malicious URL identified is `https://ttraff.com/wb?keyword=atp%20adp%20cycle%20worksheet%20pdf`. The document body, though heavily corrupted, contains fragments suggesting it's a worksheet lure. The presence of a link farm further supports the attack pattern of driving traffic to potentially malicious sites.

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/wb?keyword=atp%20adp%20cycle%20worksheet%20pdf In PDF document text
    • http://files.nowwhat-services.com/uploads/1/3/1/6/131606727/lakolojulojenow.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/1/0437/9423/5553/files/jinomifolawefizumelafug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2199/9003/files/vanuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/breaking_news_english_mini_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/xasupevamuxitorepirabiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/concrete_poems_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/siweguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/tujodupebotalefegomosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/apache_beam_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/rabazajugalabogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9978/2309/files/rutudosorozejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/fofigozuwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/access_runtime_2016_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/minecraft_tekkit_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/3ds_max_tutorials_malayalam.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 5

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_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 5124 bytes
SHA-256: c7192c4521db657f5cebaeab4a76b40da763da0a12d84a39a0605a8a1e4cb933
font_01_sfnt_off00007287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7287 10412 bytes
SHA-256: 03de08b38392b5c119c92fb6d2f7fb072c42e5bf09934326f70be7ce4932c19a
font_02_sfnt_off00009614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9614 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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