Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b941307c4374595…

MALICIOUS

PDF

43.1 KB Created: 2020-09-11 03:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fec726a57bd43f58303474aa2b279091 SHA-1: 047453dd37d04a8c06a8d13fd8c66fa5821e80a0 SHA-256: 6b941307c43745953661c6f59e2139acaf170617fbf7b1e30291b6b6849cdc17
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, identified as a link farm and redirector. The document body, though partially corrupted, contains text suggesting a lure for 'Apc smart ups 1500 installation guide', which aligns with the observed malicious redirector URL. The ML classifier strongly indicates maliciousness, and the heuristics point to the use of redirector links for SEO-based phishing.

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.club/wix?keyword=apc+smart+ups+1500+installation+guide In PDF document text
    • http://gogobov.misneraudioprograms.com/uploads/1/3/1/6/131637047/nonotat.pdfIn PDF document text
    • http://files.bhawanimaa.org/uploads/1/3/0/7/130739648/632af4fa.pdfIn PDF document text
    • http://pawuwez.cantonohiolandscaping.com/uploads/1/3/0/7/130776321/3998718.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/1/0439/3048/4904/files/62511959305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/jexudedoleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1281/5008/files/in4mo_task_reporter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/armored_god_game.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/575363_22697b696a89409aa3e8525e29fd7cc5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/81ef4b_f2f6a92846ad489489c1bcda5a559a75.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/bldc_motor_driver_circuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/3499278690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/gazowovefiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/59238094365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7568/2972/files/chadariya_jini_re_jini_audio_song.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_off0000670f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 5700 bytes
SHA-256: 6422d9050efec17ac2485858539db1909ba6ce4c73925dfa7927f69c56fb6407
font_01_sfnt_off00007a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5C 10392 bytes
SHA-256: e6ae3b1b00e44ff9f97eee27179236f2fedb0874d006744360fa1fbe07188e64

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