Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac7b862a5b18747…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 10:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa43eecac02790fc2ac01aa3e7b5b78d SHA-1: a0105baf43c10731bebd5701fdcdf470373be04e SHA-256: 2ac7b862a5b18747c973c41fdc47ef3a13c673c332d64fafd3644b4efe173236
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body also contains a URL that appears to be a lure for a password cracker, suggesting a phishing or social engineering attempt. The presence of a password-protected archive lure further supports this, as it is a common technique to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=aadhaar+card+pdf+password+cracker+online In PDF document text
    • http://files.csuwritingproject.net/uploads/1/3/0/7/130739704/ad4b0c9cd8cea39.pdfIn PDF document text
    • http://files.windycityknittingguild.com/uploads/1/3/1/3/131381363/jubokodu-xuwekuketapemul-fikevapuxarev.pdfIn PDF document text
    • http://files.rivermenrodandgunclub.com/uploads/1/3/2/3/132302973/nomegariwutok-wibiwu-visinatixubuj-sojimuta.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/1/0435/6512/1695/files/camera_calibration_chessboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/47383170436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/rst_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/bsc_magazine_october_2020_download_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/jipuzezote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/free_style_trucking_inc_blue_island_il.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/tapedejanijadijupun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7837/files/present_perfect_simple_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/83798748377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5042/9598/files/circular_buffer_java.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 5388 bytes
SHA-256: 58793aae0590f374e72db96c95626a7cd9d1fe223feb4f391bdf966fae00d8d1
font_01_sfnt_off00007948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 1940 bytes
SHA-256: 414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23
font_02_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 10228 bytes
SHA-256: cc7c57ea7721a28a3a73888ea4a4153447c9bd41a9fb26e4e6798293b8df2794

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