Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b1b9a497874259…

MALICIOUS

PDF

49.5 KB Created: 2020-08-20 05:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eba5ea72f5459d26ace87249636fcea SHA-1: 7b62343cdc2b671b41d358b65db333bc902a0418 SHA-256: 10b1b9a49787425987b3eeb64e03ddff9de349eb9c4b4dd6a3967b08efa2a1c9
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, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains text that appears to be a lure related to an 'Ap ssc memo 2006'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or content distribution network used to obscure the ultimate destination. The ML classifier also strongly flagged this 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.cc/pify?keyword=ap+ssc+memo++2006
    • http://files.thathippiephotography.com/uploads/1/3/1/6/131606652/7182883.pdf
    • http://dipiwebez.hannahhamza.com/uploads/1/3/1/3/131383483/bopokiv-kanazap-vigajojetit.pdf
    • http://jisevesir.gcgeography.org/uploads/1/3/1/1/131164250/8039845.pdf
    • http://files.bluehippofarm.com/uploads/1/3/1/6/131607029/797e5f5643.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/education_board_result_marksheet_2018.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/tategu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/letubefepetagumefije.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/bojuxoxuwafozavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/58627582734.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/chinese_chess_openings.pdf
    • https://cdn.shopify.com/s/files/1/0428/1368/5927/files/tiwere.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/diverticular_disease_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/administrao_financeira_e_oramentria_concurso.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/7027653263.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_off0000787c.bin
085d62db32972fa0b829a44d7d3541630f3587c2d8968b6a18bd9c91239d5519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787C 4712 bytes
font_01_sfnt_off0000886c.bin
1227355d3c0e2d7c82d00fee8054b5ffb73629183bac2bdb591f75881a29ff72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 10084 bytes
font_02_sfnt_off0000aaf2.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF2 4324 bytes

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