Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d001fc626a3668…

MALICIOUS

PDF

58.3 KB Created: 2020-08-14 12:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aff16f8dde91c50da021e193ab38144 SHA-1: 3595b404e6e6339548af88889ab63b71e22468bc SHA-256: 07d001fc626a3668271fb587f9ff18883fcdbcdc3f146afccb77a1930c9f97b6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination and potentially deliver a malicious payload. The document body, though heavily obfuscated, contains the same URL and a prompt for a "free answer", suggesting a phishing or scam lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content.

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=free+answer+%25E4%25B8%25AD%25E6%2596%2587
    • http://files.ryanlaneleather.com/uploads/1/3/1/8/131871852/779f1f4e.pdf
    • http://files.midmichyouthultimate.com/uploads/1/3/1/3/131380895/bikomokuxipege.pdf
    • http://files.originalgravitytours.com/uploads/1/3/2/6/132695372/pigejoxerabebu_tabipimojifiri_zaxidefupaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/30040925798.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/26296524532.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/mofutu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/jexizar.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/bearing_selection_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/41208325618.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/lolikadibibemujipodop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/bixuteku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1283/9834/files/fedixapudoxilonetawev.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/97767393525.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/lazuvufufeguxokegis.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/31173482374.pdf
    • https://cdn.shopify.com/s/files/1/0438/1445/3410/files/51940979652.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/b5_all_i_do_download.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008775.bin
3fe8547568264b5ea3b280fb77cb233c9828540cee0be7010d2668235e159bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8775 3600 bytes
font_01_sfnt_off00009411.bin
31a7c526988a7be2ccd0a44e21e48c33e90714b14e453b0dad9e2e322c4d8857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9411 3112 bytes
font_02_sfnt_off00009f15.bin
068ec15fcd3db8f836a2e5812ff1dc476dd53ac60e4aba008b635062a8497ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F15 4696 bytes
font_03_sfnt_off0000af2b.bin
b56c9405b818f6da9de27402040bb47cc81515711def6409e9ad940d59e861ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2B 13460 bytes

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