Malicious PDF — malware analysis report

Static analysis result for SHA-256 149f227cf5b2e3fd…

MALICIOUS

PDF

61.2 KB Created: 2020-08-20 07:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f9f53be9b4dd98680fda793def3f72c SHA-1: c48ad722ada276cabf70b919d1f4cf5bf08ea876 SHA-256: 149f227cf5b2e3fd032e5c6c272e39c309433f49379cba6fbb784e0bb637fd70
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=pawn+broker+bill+format'. The document body, though partially corrupted, includes text related to 'Pawn broker bill format' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm strategy to obscure the malicious destination. No scripts were extracted, but the ML classifier strongly flagged the PDF as malicious.

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=pawn+broker+bill+format
    • http://files.cathrynweissportfolio.com/uploads/1/3/1/4/131407183/8511dfe48415e56.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/kuzodedape.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/english_speaking_course_in_urdu_100_days.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/ripumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/81072253439.pdf
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/starbucks_coffee_grinders.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/sizukajefekezolopiwetuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/asientos_contables_ejercicios_resueltos_peru.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/77514725820.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/derivative_of_sigmoid_function.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/nazokujakobevavi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/abigael_bohrquez_poemas.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_off000097ba.bin
a88b47163decbfde4dea63c0e52c3936d3bf70c0e2df3ab1d78d94d971ccdd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97BA 4968 bytes
font_01_sfnt_off0000a8d1.bin
d4d31baabe32f6e3c2ba2ce7a022f43364faa988f8097521b1c57011d02ece23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D1 5032 bytes
font_02_sfnt_off0000b9ee.bin
23369cdf13be3e86ab4ccd08350b930d5db8ffcf838cdd7250262d517427ac1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EE 14816 bytes

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