Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db0597ae9fb2d42…

MALICIOUS

PDF

57.3 KB Created: 2020-07-30 16:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07ae82ba8c9b4525c264b17fd7e63843 SHA-1: 581225a94844dc5f0175e42378234dc6107c0af7 SHA-256: 8db0597ae9fb2d4296faa078601eac0437a4f590119d4bebe01fb8b54d294ee7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links hosted on 'cdn.shopify.com'. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of a malicious redirector and link farm strongly suggests a phishing or malware distribution 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=cd800a+sanwa+digital+multimeter+pdf
    • http://files.coppiceandcanvas.com/uploads/1/3/1/3/131384429/250493036d99ca.pdf
    • http://files.jasperandwick.com/uploads/1/3/2/7/132712483/bononujo.pdf
    • http://files.impeachtrumprun.com/uploads/1/3/1/0/131070674/b1bfdb5.pdf
    • http://files.pathspersonalfinance.com/uploads/1/3/0/9/130969751/faxikafe.pdf
    • http://files.coppiceandcanvas.com/uploads/1/3/1/3/131384429/2
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/fefosasugeromuviger.pdf
    • https://cdn.shopify.com/s/files/1/0437/7178/9469/files/xuvagekizodajosamamek.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/timukenizakamuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/94683865637.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/wusejiziputesumizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/14040572106.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/45116411001.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/nusikod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/raxonowiwutafag.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5721/files/66466297275.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/83865157636.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/jedok.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
stream_007_off00007fff.bin
e2943aa4d1351df43dcb060b5f69a7498a6bab5fa2b8c5073fead029cc8f5cc7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7FFF 12600 bytes
font_00_sfnt_off00006292.bin
8bf03937ed3d804ddab98f70abebefdf36328d712d5600c732f1294b4d583de3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6292 2952 bytes
font_01_sfnt_off00006d1b.bin
86a14cc0d8b3807551c1a91d35a9ca619d32fa609d44375f924fa9f5606baf7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1B 5584 bytes
font_03_sfnt_off0000a3c8.bin
2c8cc24d91e837f65a88d7a6674b56fec98873141cca42e0dd32dfa521fae34a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C8 15796 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.