Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e796414c9f09fd…

MALICIOUS

PDF

156.9 KB Created: 2020-08-21 16:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca8fa166d8958c178a99c0e54876d232 SHA-1: ab7a48546c27bc8af8fef25b81b69e8f3a705d96 SHA-256: 57e796414c9f09fd6d8185ad2c55b9c209ec9d4e9f1bb5898821e08a9ae8a10b
190 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=chemistry+form+3+notes+free'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary mechanism for luring the user. The presence of urgency and download button lures further supports the attack pattern of social engineering to entice users to click the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=chemistry+form+3+notes+free In PDF document text
    • http://rejapusab.watercolorpaintingsbymarkmellor.com/uploads/1/3/0/7/130775795/dd79a54b.pdfIn PDF document text
    • http://files.babyg-lash.com/uploads/1/3/1/3/131380390/duvobiderosofa-xekupi-rexuramod.pdfIn PDF document text
    • http://files.sweetdreamsthykingdomcome.com/uploads/1/3/0/7/130775205/bupuko_lomuzekep_liwigusuleri.pdfIn PDF document text
    • http://files.grignonmansion.org/uploads/1/3/0/7/130740163/dazaxunumofegijaxoxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12909571685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gerakofidasetivivirodipel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9644/8917/files/25266864914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/47899856351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/breathing_exercise_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/fuzubijupuzopelelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/wexitizibojofuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2115/files/83302456351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/35015725781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/76989748447.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21937 4936 bytes
SHA-256: 1b1b74bd9ee5cbd0f4bc1ac74256b32097e5c4d26b0a5ed18058380892e57607
font_01_sfnt_off000229eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x229EB 11304 bytes
SHA-256: c63ba9674514271ee99edb525675d8382ab5a43ec8fb63f606861cf523a82c78
font_02_sfnt_off00025075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25075 16248 bytes
SHA-256: fab317daee41ac4da8f39c339df38c2912d3b1987b89b6b213fbac20b8db8190