Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d390ca5d777f7c9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-09 14:09:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f5c51ba6cd64c30e05d0d6cd1378100 SHA-1: 47a94d54ace11a3f04d855edbe3aa767340acf95 SHA-256: 4d390ca5d777f7c9d821d1ac47e322eb92d462f705eb2c1b85a617148b2b5ec7
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a redirector to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body text and embedded URLs suggest a lure for downloading a PDF, which ultimately leads to the ttraff.com redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=surah+yaseen+pdf+file+download In PDF document text
    • http://files.jodiclarkecounseling.com/uploads/1/3/0/7/130776458/2f9460fb2e1.pdfIn PDF document text
    • http://files.goldsheen-sapphires.com/uploads/1/3/1/4/131482878/d2785046256.pdfIn PDF document text
    • http://najan.deltank.com/uploads/1/3/0/7/130776485/xafafal.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/1/0435/3772/7637/files/35778089318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5030/9531/files/4018366534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8127/files/dedugefijareduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/vinolufagijemawunan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/burenatefofuvunozapowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/puvuloluwor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8266/8437/files/58571233531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/fipevinuxusozusilutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/43485847335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/wexunepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/kekeponanelugabobakoweni.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
🗂 Part of campaign: goldsheen-sapphires.com 3 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4680 5228 bytes
SHA-256: 13b8100126eb752668a768f0df57153ad38c1e7739062461c637f07c3ce1b89f
font_01_sfnt_off00005847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5847 9160 bytes
SHA-256: 9e5e59e1e7724ee4ff187ba9d4f13eee261612962139c7053d98c3780cbfe6ac
font_02_sfnt_off000077b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B4 17180 bytes
SHA-256: 6f5c9e0c16f5ca363f97e6ffc861f9a633ef8bd3d72d0cbf25f195d5db01fb91
font_03_sfnt_off00009034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9034 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333