Malicious PDF — malware analysis report

Static analysis result for SHA-256 677122b7f4274a12…

MALICIOUS

PDF

97.0 KB Created: 2021-05-20 20:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e7ef100885ee9966b01aa13a8578cbcc SHA-1: b5ed0651a3272169d7639bacbad727364b7970e7 SHA-256: 677122b7f4274a1286019183934d9858eec127f29346b19b26f5db0550828966
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://midufefew.ru/strik?utm_term=dofus+sacrier+build+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379498/normal_606695247c29d.pdfIn PDF document text
    • https://bonavipopugob.weebly.com/uploads/1/3/2/3/132302892/xadekogika_sigetezuluto.pdfIn PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/mulojixomi.pdfIn PDF document text
    • https://gagetagij.weebly.com/uploads/1/3/2/6/132695244/8295233.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464052/normal_5ffa880897d93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/degagaziv/73165935597.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/80332556926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44436868-8333-4211-ae99-db5c1b1b4dac/uglies_book_2.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/jejipozisitamotepom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134b325e-8295-453a-bd23-c19a7c278726/how_to_follow_paleo_diet_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b43a98-c1bc-45dd-aa0c-2241313c8b70/fabebepes.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/64511796967.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/torokatadivamukaxira.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/50234949553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43fb1ad-7f2a-4722-940f-e16b3ff2712c/zebco_202_lady_spincast_combo_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/68951287938.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/6304894556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e37277f-6a33-4a0c-a222-c36411b32996/zetelofukotetofixuwazomos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42a1dcdd-af30-43d0-908a-1a1fd5ebb566/guxiguwabekerumevumefu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000124ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124CA 5636 bytes
SHA-256: a380a4a9a57e323ee9002d7e7544e03c2e17c3ee877048f7d435fe4e45a7bef4
font_01_sfnt_off0001380e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1380E 12552 bytes
SHA-256: f9c980f092db6745eef5ac7255c4a7f0a31a803d81636ffbe6b9d103e292bebd
font_02_sfnt_off0001619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1619D 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86

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