Malicious PDF — malware analysis report

Static analysis result for SHA-256 52870add4e4a72c4…

MALICIOUS

PDF

51.2 KB Created: 2020-08-12 02:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f13cfd11710f5621652e4b1da47da17b SHA-1: 3b7a596f7dca031358e4c3e0cb107b482b2d0fc6 SHA-256: 52870add4e4a72c41765f7dedf2e130da697451714a678a027a8c7a764e786bd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ttraff.com/pify?keyword=pengertian+agama+buddha+pdf' is the primary indicator of malicious intent. The file also exhibits characteristics of a PDF link farm, with numerous external links, suggesting a potential SEO poisoning or traffic generation scheme. No scripts were extracted, but the presence of malicious redirector links strongly suggests a phishing or malware delivery attempt.

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/pify?keyword=pengertian+agama+buddha+pdf
    • http://files.heritagefireequipment.com/uploads/1/3/1/3/131379946/3085831.pdf
    • http://files.contevittorio.com/uploads/1/3/0/7/130775776/faxekanapifose-danod.pdf
    • http://files.kellygorsuchwellness.com/uploads/1/3/1/4/131453897/gitexozidabenalobuv.pdf
    • http://medin.alisonrsolomon.com/uploads/1/3/2/6/132683051/marodakolikejirazuju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0553/3598/files/57642725317.pdf
    • https://cdn.shopify.com/s/files/1/0449/1545/8215/files/union_budget_2020_19_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/wow_engineering_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/jegezeme.pdf
    • https://cdn.shopify.com/s/files/1/0447/5237/1863/files/xufitab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/20318482921.pdf
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/womuxisopuvalanegejinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/25983040691.pdf
    • https://cdn.shopify.com/s/files/1/0431/4959/0690/files/12567486010.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/geometric_distribution_function.pdf
    • https://cdn.shopify.com/s/files/1/0436/5592/1817/files/xafuronum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007318.bin
5ed4de01f9610c1847d2982d6700572ca9923fb2b94774a313d95c1aab41088b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 5156 bytes
font_01_sfnt_off00008462.bin
789137fb31bd9f20e58d6d73140bcec88ab3fdcddd508981fe555d2d5a0a19ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 10076 bytes
font_02_sfnt_off0000a6cc.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6CC 4324 bytes
font_03_sfnt_off0000b4cd.bin
8f07a1c94ca46ab9262dbc46921b27fe88112903126030dbef7a68b83cd066e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4CD 2600 bytes

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