Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2367a5332d5d77…

MALICIOUS

PDF

61.2 KB Created: 2020-08-22 23:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b044041ea8c037f27bdf35f2967559ec SHA-1: 7ad88b83fa5be78070d2369b245a23cccfd2d86a SHA-256: 6c2367a5332d5d771c843376b84a422762e73cc3b3abfba7f51ee1273cfe3940
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. This suggests an attempt to direct users to malicious content or phishing pages. The presence of a large number of external PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute 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=zen+budismo+e+psican%25C3%25A1lise+pdf
    • http://latax.nomaallim.com/uploads/1/3/0/8/130873851/mogosotidi_wedividinog_xorimivutet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/miresabuwepagux.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/toeic_barron_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/ableton_live_10_lite_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0146/1410/files/ccna_routing_and_switching_todd_lammle.pdf
    • https://cdn.shopify.com/s/files/1/0435/7180/6366/files/autentico_1_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/88786456986.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/7888214221.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/39232217405.pdf
    • https://cdn.shopify.com/s/files/1/0434/3808/0166/files/xowimud.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/sesibimedutebezo.pdf
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/download_file_instead_of_opening_in_browser.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/gba_emulator_apk_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/37540328847.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/fakiparoz.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_off0000acc4.bin
d921a26045271912520898da5e105d84ed1e03b9dbfde27782a9aae1106e33dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xACC4 5536 bytes
font_01_sfnt_off0000beed.bin
3a4cdc52b6f631b1d019ff799c5bd986458608ce68573a378dd4094e379853a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEED 13260 bytes