Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f880939dcf3a735…

MALICIOUS

PDF

103.4 KB Created: 2020-08-01 22:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43a8b377525f67347a857a9e8aef7bae SHA-1: 4a87939832d85dd80ffc5f4f7e04a277aece7e1e SHA-256: 5f880939dcf3a7353ef672dc41432a6dd0d9cc5a9be5b9ed1a4b58d87365c600
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector URL (https://ttraff.com/pify?keyword=c+copy+file) which is flagged as malicious. The document body explicitly instructs the user to 'copy file' and paste it, indicating a lure to execute commands or visit malicious sites. This suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=c+copy+file In PDF document text
    • http://files.veerahiranandani.com/uploads/1/3/1/3/131398547/xerutosifob_fogaguzawow_varixefuluzo.pdfIn PDF document text
    • http://files.countertruth.com/uploads/1/3/2/7/132740458/xefudokavisam-fofanovalobin-borinidiposix-jojovigez.pdfIn PDF document text
    • http://files.potluckcornwall.co.uk/uploads/1/3/0/7/130738614/redobovupane_jinefojulo_dikufiwiwasimop.pdfIn PDF document text
    • http://files.acail.org/uploads/1/3/1/4/131437194/jawemir-jenijikeduvexi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/kugobom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/tolaxiwukenijugufodiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/79103442895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/80174332014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/881810216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1193/files/9936813365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/18475987626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/38769441077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/ultimate_boot_cd_for_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/37312001543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/loxekedukunapagujux.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12793 4252 bytes
SHA-256: 19a4b43bf9d4f6f3afbae9c2e9f718b1915e26b61857aca05b2e7d44d09cbfe1
font_01_sfnt_off00013616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13616 17636 bytes
SHA-256: ffdcd74d9198c3904a7b8b60a96ed193d77a778edd7ddab2329fd9807e13dc0b
font_02_sfnt_off00016cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CDB 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b
font_03_sfnt_off00018267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18267 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3