Malicious PDF — malware analysis report

Static analysis result for SHA-256 554bc1f37e594e73…

MALICIOUS

PDF

18.2 KB Created: 2019-04-29 23:15:54 +01:00 Authoring application: mPDF 5.7
MD5: a0c76145d3abef915f2fabc97f41e890 SHA-1: 5dadb955d4903afd95d7d19b114aad541b64fff2 SHA-256: 554bc1f37e594e733be28dcb61bf34d32d8e14e80cc0411a645198e1cf3f727e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely used to redirect users to malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7202240-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7202240-0
  • 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 http://loaminoo.linkpc.net/1090092098094096093/The-White-Death-Read-Along-by-Khoury.pdf
    • http://loaminoo.linkpc.net/1090092098094096091/Psychic-Detective-Read-Along-by-Khoury.pdf
    • http://loaminoo.linkpc.net/2098098092094095/Death-in-a-White-Tie-Overture-to-Death-Death-at-the-Bar-by-Ngaio-Marsh.pdf
    • http://loaminoo.linkpc.net/1099099098092090/You-Read-to-Me-I-ll-Read-to-You-Very-Short-Stories-to-Read-Together-by-Mary-Ann-Hoberman.pdf
    • http://loaminoo.linkpc.net/1090092098094097091/A-Handful-of-Blue-Earth-Poems-by-Venus-Khoury-Ghata-by-V-nus-Khoury-Ghata.pdf
    • http://loaminoo.linkpc.net/1090092098093098095/Bernard-Khoury-The-Wrong-Approach-by-Bernard-Khoury.pdf
    • http://loaminoo.linkpc.net/5098092097099092/Racism-from-a-White-Perspective-A-Book-All-People-to-Read-Especially-Non-Whites-It-Is-Time-We-Hear-from-a-Non-Liberal-the-Actual-Facts-by-Jerry-Henrie.pdf
    • http://loaminoo.linkpc.net/4096097099091090/To-The-Death-by-Angela-White.pdf
    • http://loaminoo.linkpc.net/1090092098094095098/Raymond-Khoury-Books-2017-Checklist-Reading-Order-of-Templar-Series-and-List-of-All-Raymond-Khoury-Books-by-Series-List.pdf
    • http://loaminoo.linkpc.net/7093098093090098/Summary-Perfume-by-Patrick-S-skind-Read-In-15-Minutes-Or-Less-by-Read-Less-Know-More.pdf
    • http://loaminoo.linkpc.net/3091092099090/Well-Read-Then-Dead-A-Read-Em-and-Eat-Mystery-1-by-Terrie-Farley-Moran.pdf
    • http://loaminoo.linkpc.net/4093091091091098/White-Death-NUMA-Files-4-by-Clive-Cussler.pdf
    • http://loaminoo.linkpc.net/7093098092095093/A-Death-at-the-White-Camellia-Orphanage-by-Marly-Youmans.pdf
    • http://loaminoo.linkpc.net/1098098091098095/Cheating-Death-The-Immortal-Descendants-5-by-April-White.pdf
    • http://loaminoo.linkpc.net/8096094099096094/Manner-of-Death-Alan-Gregory-7-by-Stephen-White.pdf
    • http://loaminoo.linkpc.net/1099095096095096/Read-This-Next-500-of-the-Best-Books-You-ll-Ever-Read-by-Howard-Mittelmark.pdf
    • http://loaminoo.linkpc.net/4095090093090092/Dead-White-and-Blue-Death-on-Demand-23-by-Carolyn-G-Hart.pdf
    • http://loaminoo.linkpc.net/2095090092093/The-White-Dragon-From-Chapters-3-4-5-amp-6-Read-by-the-Author-Anne-McCaffrey-by-Anne-McCaffrey.pdf
    • http://loaminoo.linkpc.net/3094091098099092/Death-Wore-White-DI-Peter-Shaw-amp-DS-George-Valentine-1-by-Jim-Kelly.pdf
    • http://loaminoo.linkpc.net/4096092096091092/A-Death-in-White-Bear-Lake-The-True-Chronicle-of-an-All-American-Town-by-Barry-Siegel.pdf
    • http://loaminoo.linkpc.net/1090092098094095098/Raymond-

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