Malicious PDF — malware analysis report

Static analysis result for SHA-256 818003062233c329…

MALICIOUS

PDF

54.7 KB Created: 2020-07-25 16:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f56a022f83b1a1f5cca81d1db0d1367 SHA-1: 01e6cf4d0587bfda74281c2037b3feb0ad3a2383 SHA-256: 818003062233c329c8d4acaa51dec6e121fdac6687fc29db3ea0f2c32e4c6955
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to redirector infrastructure, specifically identified as a malicious redirector and an SEO link farm. The document body, though heavily obfuscated, suggests a lure related to 'country and capital in telugu pdf'. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points towards an attempt to drive traffic to malicious sites.

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/wb?keyword=country%20and%20capital%20in%20telugu%20pdf In PDF document text
    • http://files.lithgowagedcareltd.com/uploads/1/3/0/7/130775116/gevelugotuvano-setavuwefiwi-deloxiwafud-nuzepenexelapa.pdfIn PDF document text
    • http://files.undergroundcomedyfest.com/uploads/1/3/0/8/130814234/582a1a69.pdfIn PDF document text
    • http://files.recoverycafeindy.org/uploads/1/3/0/8/130813413/32a8e806.pdfIn PDF document text
    • http://files.gracenstrength.com/uploads/1/3/0/8/130814127/b056c23a8289c59.pdfIn PDF document text
    • http://files.compassionatelife.net/uploads/1/3/1/0/131070149/keputokodubavemit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/42861215999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gadawatozuwagujezudoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/jezizoteloratutapeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/mirefizexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/86864784718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/sogijujij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/gedabigakuxivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/52535315144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/98754847267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/36830881903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/fafexesimagenoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/73409593972.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000799c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 5152 bytes
SHA-256: 52ab3e769f4726194948d93a8ac1710c0cbd7dff2fd54ff7079987e9b59113a5
font_01_sfnt_off00008b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 4300 bytes
SHA-256: 72dc5a6ca4a5f097d48e1a0abdda47e7db48fc854f191c1dd3a8498734da29cc
font_02_sfnt_off00009b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5B 10852 bytes
SHA-256: 11dd1b57408ed9f11d31960c79c3826d9c1b6247d0f0d0c33cc63a77410b65e2
font_03_sfnt_off0000bf57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF57 2832 bytes
SHA-256: ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891