Malicious PDF — malware analysis report

Static analysis result for SHA-256 8482822d6e884269…

MALICIOUS

PDF

34.9 KB Created: 2020-08-02 00:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d76559527f40a9653f43fdfb57465ec2 SHA-1: d6247800b3b4735743bc713c1b58a59deaf62aba SHA-256: 8482822d6e884269bdd66352bdf7459389484abeaf7754c91976ef9950b136d6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm of 17 external PDF links, with the primary redirector URL being https://ttraff.com/pify?keyword=old+forge+cam. This indicates a likely attempt to lure users to malicious content or phishing pages. 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.com/pify?keyword=old+forge+cam
    • http://files.foodbuddha.ca/uploads/1/3/0/8/130873781/3554481.pdf
    • http://files.newlifetabernacleupc.com/uploads/1/3/1/4/131482941/tusojipisaxedo_muxabijapa.pdf
    • http://files.quintabella.com/uploads/1/3/0/7/130775490/jimutafesuxirife.pdf
    • http://files.britanniabeachcommunity.org/uploads/1/3/1/3/131380005/8964999.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/jumajegarodaxaneg.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/sigugaxirowad.pdf
    • https://cdn.shopify.com/s/files/1/0429/4685/5078/files/bebaxotusijo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/xekuxagetofogafik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/xemoxolinajis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6652/3809/files/foundations_of_macroeconomics_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/97334483650.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/34300682013.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/76615685647.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/60187904886.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/felizudamuvejekax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/8017481414.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_off00004d03.bin
90b5986e12c70f1c09ba60a696180881754533e26846acec372226ba0ddf4b0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D03 5192 bytes
font_01_sfnt_off00005e92.bin
994af42a34799d8655df6a598de4c0af27901c4000ef4f210f6c019f5dbb8e7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E92 9536 bytes