Malicious PDF — malware analysis report

Static analysis result for SHA-256 52868e1bbf27019e…

MALICIOUS

PDF

119.4 KB Created: 2020-08-19 06:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3965bd8e965faa63ca651031cfc09949 SHA-1: dff6e2e8c7942684a7f3bc69043fa33871a83d3d SHA-256: 52868e1bbf27019e2583e9e5ea55d199ad5aecd24e70f48faf84d65dc5a8002e
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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.
  • 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.ru/pify?keyword=half+yearly+exam+2018+english+answer+key In PDF document text
    • http://files.tycymorth.org.uk/uploads/1/3/0/9/130968992/kiwapemugugi.pdfIn PDF document text
    • http://files.tasmanyf.org/uploads/1/3/1/0/131070356/75bbf1427.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0432/7997/4556/files/24208929381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/gizubifajatune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2813/1485/files/estados_financieros_contabilidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/tv_guide_florence_sc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/paxosexutede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/vawopuzavizawaperalasab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/81712398054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/kokifajutaso.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001371a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1371A 19852 bytes
SHA-256: c4de3c9d0eb1ab0fd71436860ee081f8bcfee49963e01a0e887da6052678ac7d
font_00_sfnt_off0001243e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1243E 5588 bytes
SHA-256: 91b5bc45d0fb8114e69ff4bb251a16edf4c32b876de540c6bc40ac0877d13a09
font_02_sfnt_off00016257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16257 1944 bytes
SHA-256: cf59a1c105ebc0425001a103fd3720db8079a93491def8cdf6e7b06015e454fc
font_03_sfnt_off00016ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BA0 15608 bytes
SHA-256: 7e0415d7a060c70972731cbff17bc685db39b1deecc2f64e581d489687a4a203
font_04_sfnt_off00019be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BE9 16364 bytes
SHA-256: 560548190d3588af37ebd144b10067da26eafb353cf82387b3a26894bc5052bc
font_05_sfnt_off0001b1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1F5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
font_06_sfnt_off0001bff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFF5 3616 bytes
SHA-256: dfbf09cc153ffa2fa7ced384135d848d278891a2eefb43d42369ee97a0b1926f