Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d713f2abafae1b9…

MALICIOUS

PDF

68.6 KB Created: 2020-08-30 21:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7a518a99f1c83980870ae9b5c533d41 SHA-1: 86f3e9a148625a733cd9d9039a6647f6b67350e1 SHA-256: 2d713f2abafae1b9b4f28604aae1690c2cd28bcebf1c5eb6add24ab67ab7a44d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to known malicious infrastructure. The document body, though heavily obfuscated, appears to contain the same URL. This suggests the document's primary purpose is to trick the user into visiting a malicious site, likely for further exploitation or credential harvesting.

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.cc/wix?keyword=2006+yamaha+vino+125+service+manual
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/44449291650.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/renanaxesarukeke.pdf
    • https://cdn.shopify.com/s/files/1/0431/5706/1781/files/25704511210.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6789/files/zugofeleluzelitimuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/sebewikitumeroro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kurejala.pdf
    • https://cdn.shopify.com/s/files/1/0437/7352/6178/files/45063569167.pdf
    • https://cdn.shopify.com/s/files/1/0434/2507/1256/files/sony_bluetooth_headset_sbh60_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/mathswatch_recurring_decimals_to_fractions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/fakibepifa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/craftsman_lt1000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/jiwidasipun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/kazod.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c49f.bin
d69dec9d0152dd8c7bd4030c02ff081bbea71f0a0ce537673186ab4f08e3d813
pdf-font-stream PDF embedded font (sfnt) at offset 0xC49F 5708 bytes
font_01_sfnt_off0000d7f3.bin
0fde548ba57cf661578a7c4ea345cc951f894ed5a158b35f5be964b11299441e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F3 14808 bytes