Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c45efdac3ec17e…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 19:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd362b86286de1afbcf5411ab0b8464d SHA-1: 875ca2249f38dd2ad438f3baf1570a704944382b SHA-256: 95c45efdac3ec17e6430a6993067d25249abfcab7bcb7d9e98aa020c5a3e7f67
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body is obfuscated but appears to be a lure related to a "Texas 6th grade math textbook pdf". The primary goal seems to be directing users to malicious websites through these embedded links.

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=texas+6th+grade+math+textbook+pdf
    • http://files.wawaudax.com/uploads/1/3/1/6/131637553/3983133.pdf
    • http://files.stellarlanes.ca/uploads/1/3/1/4/131482832/jowagi-vakazetivusu-jarosewazevazi-lagupevukajav.pdf
    • http://bepor.arcoftheancients.com/uploads/1/3/0/8/130813747/6791475.pdf
    • http://files.aloveleighcreation.ca/uploads/1/3/0/9/130969761/4518906.pdf
    • http://files.madelinemullenbach.com/uploads/1/3/2/8/132816096/30a6a0.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/rtd_calibration_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0433/4390/4927/files/solid_geometric_figures.pdf
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/fokenedapigirisetoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/nusanowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/68947054915.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/61625437026.pdf
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/altivar_21_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5738/0514/files/duran_duran_come_undone_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/garmin_montana_680t_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/pawom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/78317092336.pdf
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/wezomavubulekegiti.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/structural_functionalism_sociology.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_off000061a7.bin
7dc22bb982c706b2cb31103fb09b29ffc10063d09b18c2d87ff039ff7c4f3c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 5796 bytes
font_01_sfnt_off00007535.bin
ac65f68b59b370431a8f1f0a2964f68b5e2d65514de73a1ae888bdb2117f667e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7535 10476 bytes

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