Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b54e87cb406c9da…

MALICIOUS

PDF

46.3 KB Created: 2020-11-01 04:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 754fd1cfd5e5a00dc612723d8bd8775e SHA-1: 1cb5a82e1ae0ed7e255676459e9c256d3ac649d4 SHA-256: 1b54e87cb406c9da1edd9f7168927631fefab203eed3e536fd6ef1e58395a129
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, suggesting an attempt to manipulate search engine results or distribute content broadly. The presence of the '2 accounts apk' keyword in the malicious URL indicates a potential lure for users seeking specific applications.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/123?keyword=2+accounts+apk In PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/jiwaputimi_virijiziwadew_refudufa.pdfIn PDF document text
    • https://kerixigepib.weebly.com/uploads/1/3/4/2/134235482/cac9e9.pdfIn PDF document text
    • https://jemajodelevo.weebly.com/uploads/1/3/4/3/134394711/a4beabd45ae11.pdfIn PDF document text
    • https://foduzivanikatik.weebly.com/uploads/1/3/4/4/134492938/e0911126477e6ab.pdfIn PDF document text
    • https://jipepusubame.weebly.com/uploads/1/3/4/0/134040653/nimotufamesex_sikutataniwilag_rilopurupo_figuvo.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/1/0501/1636/2390/files/73701351500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0888/7454/files/elba_oven_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0246/7733/files/glass_magnetic_notice_boards.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/78422601561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7828/7513/files/23566024234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0038/5695/files/explain_p_hat_in_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2493/0728/files/vopidak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d262473a-7c90-4fc2-8df6-a6885f22a2d8/r_psych_package.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6da58f3d-a2d7-4603-a8e5-31344652d119/kotor_jedi_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2161/3241/files/panolebakupudorukuvaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/rewugewesuzutelatufipero.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 5956 bytes
SHA-256: ce4937cf13614ecca396b786b0c9114cbf1795fd7f034f4686383b9c87253cae
font_01_sfnt_off0000765f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 4900 bytes
SHA-256: c491273df34aab62624491ee1f2e12d4a8497c7eeb570384a38dd3937762184b
font_02_sfnt_off0000871e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871E 11120 bytes
SHA-256: 1984ae481098341a3aacde76460e861a71ab010f4708345b1611005b8676b74a

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