Malicious PDF — malware analysis report

Static analysis result for SHA-256 43cbeac2316fbaa0…

MALICIOUS

PDF

73.3 KB Created: 2020-11-20 09:59:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ef82504d9dcca9e133b3d1b4aedd3227 SHA-1: d8330c682c89539e3bc8cfc8be38069983c2b5a8 SHA-256: 43cbeac2316fbaa0f78568c1079032ccc7e2d1877414a984c8ac661db9da22c4
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=poe+scion+builds PDF link annotation
    • https://jabuzowe.weebly.com/uploads/1/3/4/3/134312688/megugu-bovogajamu-pedomajisi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f87d3f725cd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_5fa0b03b95e83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f9a02a81a4e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5fa69878a94c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489440/normal_5fb7073489a57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5f94988c8d695.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/godewumazek/half_dragon_half_wolf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/310b2c20-f9f4-42ed-9f3a-1091830c78c7/84469458749.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/domajonix.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/gizoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5168a1-f058-477d-9c8b-6c469de73fc1/7824876568.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/a_moveable_feast_by_ernest_hemingway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6831f94-c2e3-43cf-befa-2e6d5d7bfd88/16705947003.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/hoe_enchantments_hypixel_skyblock.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21F 6740 bytes
SHA-256: 960be24e41903e2c9ee1a53646adac9b94dd6a5b6743d5e0f11d54c2ff8ab323
font_01_sfnt_off0000c2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F3 4768 bytes
SHA-256: 108dbf41c37ea87fe5204b2f598ca2335581b6fa9842450a71359536059278f4
font_02_sfnt_off0000d32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32E 2752 bytes
SHA-256: 68925555bb5fc02d0f4526d4db64b351f6af3acc01f5462bd8b4848b6049f760
font_03_sfnt_off0000df51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF51 10552 bytes
SHA-256: d8676cb71025749e52ee6adb7c86178264ffe4fa6392ab9321ec0e42a49be9f2
font_04_sfnt_off00010332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10332 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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