Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97d2379de310a2c…

MALICIOUS

PDF

77.8 KB Created: 2020-08-01 17:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9842b30fa05fd9241aa6d2b7c54b151 SHA-1: 57c1587ca4dca3d87aa7c8df80d2674ba1b85c52 SHA-256: a97d2379de310a2cdc1e5da1af8d51e4cdd9cf6c0e4639439dfe1921a5b2e99b
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure related to 'I love money season 3'. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a redirector link and a link farm. The document body, though heavily obfuscated, contains the same redirect URL, reinforcing the malicious intent.

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=i+love+money+season+3
    • http://files.cherylquist.com/uploads/1/3/2/6/132695401/dogifove_bemalopapoxur_kaxesujaxebas.pdf
    • http://files.lechowskislab.com/uploads/1/3/2/6/132683088/wevexep.pdf
    • http://files.queenslandcallers.com/uploads/1/3/1/4/131437984/81dd234e09.pdf
    • http://files.andrewmleslie.com/uploads/1/3/1/4/131484133/553700.pdf
    • https://cdn.shopify.com/s/files/1/0437/8086/6197/files/58762062833.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/witomuwinadagasaze.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/kavevifewekeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/48272553720.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/fotasutag.pdf
    • https://cdn.shopify.com/s/files/1/0429/5367/0822/files/pozagutovadusatimomuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/vogerixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/lajipiximu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/moralibiwebolakivamudaxen.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/jepezojizosenopojoba.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/lijijubobiwom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.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_off0000ef90.bin
0ff2f25c84051cbecc7b6265da107761bc08207e6c451065dc6c61a51efb8320
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF90 4996 bytes
font_01_sfnt_off0001008c.bin
2b4ba7a7d38a8344d6cbd379dbd9199d144562c2532e36725ac1a70106649e8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1008C 12684 bytes