Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6d4a0a51051f3b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-26 17:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 314f4161fe755e99c0bac0ad0f0e2c91 SHA-1: 82270a6e81c51e9e7fde287100b912e32e0b067a SHA-256: 1f6d4a0a51051f3b9edfb9318fd573563598f93e056068afce8f4d4935037ff7
194 Risk Score

Malware Insights

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

The PDF document contains a link farm and a critical redirector link pointing to a URL that includes 'easeus data recovery wizard crack co'. This suggests a lure to download cracked software, which is a common phishing tactic. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or malware download.

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=easeus+data+recovery+wizard+crack+co In PDF document text
    • http://gadujodol.artandsoulbymica.com/uploads/1/3/0/8/130813528/431c6.pdfIn PDF document text
    • http://sixidoxo.lisastory.org/uploads/1/3/2/6/132682347/lubutupozadodisitu.pdfIn PDF document text
    • http://vegimu.ihsalumniassociation.com/uploads/1/3/2/7/132740405/butuxijekafe-tivokuwe-kefivuli.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/1/0450/9509/2376/files/formwork_for_concrete_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/attitude_motivation_test_battery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/attestation_de_travail_cnr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/log_properties_practice_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/90676906667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/denefawowopekidib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/adhikari_tamil_movie_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/rudadoveketakozupesuj.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 4

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_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 5228 bytes
SHA-256: a8db704ffc70278bdcf1b7fe4f9bc0487b26db74ed6aab32a15bf2f65291cbf3
font_01_sfnt_off00007450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7450 10572 bytes
SHA-256: 9fcdb2fbaa52b50a52fb4af310182b4d0d5a2d6b6d1e73245b9b2b204912fb51

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