Malicious PDF — malware analysis report

Static analysis result for SHA-256 db24202194f1095c…

MALICIOUS

PDF

82.7 KB Created: 2021-04-06 16:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a0ae21e7d26723bfb3f4435a74cea435 SHA-1: 988dcc5f56521bf51abba8fb612b4620f3f5d5bd SHA-256: db24202194f1095c602396e5eb4ca9a1ca2fad21a92eabf56c192126c35c32b0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to a suspicious domain. ClamAV and ML classifiers indicate malicious content, likely a phishing or trojan distribution attempt. The PDF_SEO_LINK_FARM heuristic suggests the document is designed to host a large number of links, potentially for SEO manipulation or to distribute various malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://resalured.ru/award?keyword=achtung+panzer+libro+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380528/normal_6061df2271b0d.pdfIn PDF document text
    • http://gk-kuban.ru/73905235233jeiw5.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480173/normal_5fef1277c42d0.pdfIn PDF document text
    • http://dragonflysagewellness.com/55466386862hcs4l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421767/normal_601de0c527b44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404290/normal_5ffbae28267c1.pdfIn PDF document text
    • http://shopyou.online/diet_for_blood_type_b_positiver8ob1.pdfIn PDF document text
    • http://1xbets-regs.site/fuwipekixokupo35ll0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417313/normal_6035a2dbec1d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b94e0836-1448-4aa9-8b3a-f9321f895028/problemas_de_salud_publica_en_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/how_to_take_night_photos_canon_rebel_t5i.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/79116934410.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/marquette_farm_welder_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/66282580332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55850ba2-b877-44e0-ba63-7417102b2b59/how_fast_is_apple_airport_express.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ba6edaf-5ace-42ed-99b3-a915b2e3c63a/rehras_sahib_full_path_download_mr_jatt.pdfIn PDF document text
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_d81f8d97189f43c39025a7865ad3730b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/73fec6cd-b481-44b1-abdf-aedc580c8ec1/vebawajozogi.pdfIn PDF document text
    • https://eb72eaa1-ef55-40a3-a653-f6d21bccf295.filesusr.com/ugd/54913d_076ba11621614b49a1497c28453b14db.pdf?index=trueIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_2afa8860136d4e0985f9950baf6a024a.pdf?index=trueIn PDF document text
    • https://c83cbd6e-a134-4b49-ba12-49f24c654ad9.filesusr.com/ugd/904a8b_dae86b900b15450a8952a0a1311be9aa.pdf?index=trueIn PDF document text
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_372f359be298457f91f75f4b415c6de1.pdf?index=trueIn 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD53 5300 bytes
SHA-256: c27d26cc8ee5428203808f6fb733d2914b6fe30c85829f05f8922ec9198fd689
font_01_sfnt_off0000ef4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4A 12808 bytes
SHA-256: 939fa05e13f6db0b6b2f90227c554ea817426edd8c2179253bc434b0a1c5c828
font_02_sfnt_off00011829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11829 16140 bytes
SHA-256: 3f83bbfb2e03141a9083badfb1da6e2b1773f9aa6b1ed8f30fc2d392a5ee3553
font_03_sfnt_off00012d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D27 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71