Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ea9597e749a4e1…

MALICIOUS

PDF

51.8 KB Created: 2020-08-16 12:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79db68e0ef920259c459170de0a91829 SHA-1: 4fe38397c6d2ebbca7513d8eae243cc470d91135 SHA-256: b8ea9597e749a4e173521511658ff2960653f05fe161cafb16d00fd641f0386a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=narasimha+video+songs+free'. Another critical heuristic identified a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the lure. No scripts were extracted, but the presence of multiple unknown URLs indicates a high likelihood of further malicious activity.

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=narasimha+video+songs+free In PDF document text
    • http://files.rollsroyceweddingcarsuk.com/uploads/1/3/2/6/132681586/selopegazituw.pdfIn PDF document text
    • http://nasop.mwf-ec2019.com/uploads/1/3/0/7/130739220/nopokuludofumul.pdfIn PDF document text
    • http://vuleg.plantsforhouston.com/uploads/1/3/1/3/131380429/477081.pdfIn PDF document text
    • http://files.soundteaching.ca/uploads/1/3/0/7/130776573/781138eef9835de.pdfIn PDF document text
    • http://files.benjamincarkeyreplacement.com/uploads/1/3/0/7/130775032/510d9d.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/1/0427/6640/1692/files/51861111141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/cylindrical_coordinates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/68941146190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/62514381681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/ragnarok_acolyte_level_up_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/kokaxin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/pikovax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1781/files/77598706917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/sixovexozimunaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/83408790050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/jevepafekuzozujixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9499/files/77252278809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/41566307753.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8137 5316 bytes
SHA-256: 8fd4739ec67eef6466863b4b3bbc63643e8ec48ef33c63151a8a92fd41f6086c
font_01_sfnt_off00009333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9333 15016 bytes
SHA-256: 7ee7a27598a74d86f0dbc6922b61164eea3ea43b074f356489ac85a6db1c0382