Malicious PDF — malware analysis report

Static analysis result for SHA-256 76163998eceeaead…

MALICIOUS

PDF

45.2 KB Created: 2020-08-30 17:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1535d923fcae6c0fd07b40a4b47221ef SHA-1: 555a3b61cc04abbb160cf85e3bbdde7b1fc8246f SHA-256: 76163998eceeaead89fa2cca4f1592e524791d702c6f3f8d5bc13dba421ab00f
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely intended to trick the user into downloading malware or visiting a phishing site. The document body text and embedded URLs reinforce this malicious intent, suggesting a lure for a song download that leads to the malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirector pattern.

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.ru/wix?keyword=laga+chunri+me+daag+chhupaun+kaise+mp3+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/cbe7f7_fb39b1f987a54fff9e77df9c81032ed4.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d68b757b6564f6597666d79b09c24aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_72f3e7aed4a646a0a6eb583b5daed43c.pdf
    • https://static.usrfiles.com/ugd/0b46e6_5af3077580554593abd73757f9c2f67c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec284379e554faf84c97e216abefd89.pdf
    • https://static.usrfiles.com/ugd/b47706_7558a3d247fd438085b19f5e679f21ec.pdf
    • https://static.usrfiles.com/ugd/b52961_cfac495fdff7423aa3ae6b290b120c97.pdf
    • https://static.usrfiles.com/ugd/4c1554_5a03bb9b50434bacb5b78fbaff90b9f7.pdf
    • https://static.usrfiles.com/ugd/d2751c_edbd2922cb70443591e03d492213dd78.pdf
    • https://static.usrfiles.com/ugd/b0b521_56b2f866625d4f778d7702dca9cfb335.pdf
    • https://static.usrfiles.com/ugd/c0fca2_942be6ce6faf4693bd8fafb715a04021.pdf
    • https://static.usrfiles.com/ugd/e33828_7bf86d263d5240cf8d34324ad68e8033.pdf
    • https://static.usrfiles.com/ugd/dc98cc_8870c04c48da4684b1a064fa2bc035de.pdf
    • https://static.usrfiles.com/ugd/6924eb_eb233694ce144d3bad38e62aafe5a259.pdf
    • https://static.usrfiles.com/ugd/b8c837_eea4112683c54a28bbe9606a482bf2ab.pdf
    • https://static.usrfiles.com/ugd/544c7e_7a155792bce64cf0a08385948a5b1548.pdf
    • https://static.usrfiles.com/ugd/b8c837_a846efa9854d47ff9a344078faf818f2.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054e8.bin
3217500a1dbbe8f521c4160cc1fec58298fb422a2877c3ddaf4b7288c80fb3f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x54E8 5548 bytes
font_01_sfnt_off0000679b.bin
a669fc746b941f14a72d20516a51c8874b67d2fd8e3c166b449251779f32d4fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 15304 bytes
font_02_sfnt_off0000975f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x975F 4324 bytes