Malicious PDF — malware analysis report

Static analysis result for SHA-256 181fdf7e4cf8454a…

MALICIOUS

PDF

55.6 KB Created: 2020-08-02 20:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fe436e98987af393402e6e157a056ec SHA-1: 3c4874a13b9b7e48731988042b6610913bfc7d4f SHA-256: 181fdf7e4cf8454a3a51b800db21544de9212d7fe20c81cf1367c77ccc982574
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO abuse tactic. The presence of a 'download button' lure further supports a malicious intent to trick users into clicking the link. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=genie+pro+screw+drive+manual
    • http://files.architectmcgahrenctny.com/uploads/1/3/0/7/130739214/1ff3cc1beb143f.pdf
    • http://files.castprojectpompeii.org/uploads/1/3/0/9/130969480/58510110fef30.pdf
    • http://files.georgeayee.com/uploads/1/3/1/3/131398195/dulofewedol-wutivepekatedi-saliwagoxoraz-wipuribamasada.pdf
    • http://bupigapo.mathewsfoto.com/uploads/1/3/1/8/131856476/addcad9d0c3.pdf
    • http://files.woundandwisdom.me/uploads/1/3/2/7/132740871/08a701c5ff999.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5349/0074/files/28842177213.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/72696342991.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/disetusafikebe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/33931247351.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/lubexanajovefurekunojis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/1276359313.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/86747344145.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/google_drive_wolf_of_wall_street.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/72133596110.pdf
    • https://cdn.shopify.com/s/files/1/0431/4798/5053/files/wezonokin.pdf
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/kabonojezane.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094a5.bin
22982795d28bbf98ed9b79cb2a738703e4b61efa8ee3a7ec7c32de8fd14ac092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A5 5404 bytes
font_01_sfnt_off0000a705.bin
150eee64af5001863cc3e07a31da68b2a4005a11cf0223c4eb1a79278b77bfbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA705 13336 bytes

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