Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1897ccaad089ac…

MALICIOUS

PDF

41.5 KB Created: 2020-08-12 12:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb4ad47cb990c32634c47cffbefad1f8 SHA-1: bee30b06f16143a054d17be4526c461beb0a661b SHA-256: 0b1897ccaad089aca052a5bb309a04724ad284a8a77233d88a49f3b6a1c3fdd0
202 Risk Score

Malware Insights

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

This PDF document employs a common lure, presenting itself as IELTS speaking materials to trick users into clicking a link. The primary link, 'https://ttraff.com/pify?keyword=makkar+ielts+speaking+pdf+2020+download+september', is identified as a malicious redirector. The document also contains a large number of links to various PDF files hosted on Shopify, likely part of an SEO link farm to improve search engine ranking for the malicious content. No scripts were extracted, but the presence of malicious redirector links and the SEO link farm strategy strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=makkar+ielts+speaking+pdf+2020+download+september In PDF document text
    • http://kenofire.yourglobalclassroom.net/uploads/1/3/0/7/130739430/zobijotugajemimes.pdfIn PDF document text
    • http://files.goldfishprints.net/uploads/1/3/1/3/131380008/duwefo.pdfIn PDF document text
    • http://dekuz.theaterinthepark.net/uploads/1/3/0/7/130775085/bexira.pdfIn PDF document text
    • http://files.camelotballoons.com/uploads/1/3/1/1/131163737/7013599.pdfIn PDF document text
    • http://files.ennishistory.com/uploads/1/3/0/8/130874667/a264d668111c.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/1/0431/5021/3274/files/11122313391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2417/8600/files/ielts_academic_reading_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/fufadobanujavejogefezuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/fisanofosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/71479786954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/pivogubumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/ffxiv_house_buying_macro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/73786756692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/92835544334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/fuxusazurotabuteba.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_off000061ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EA 5936 bytes
SHA-256: 3e516493490fd2c69f55dd881d43f7ab5770cbf64eedfe4b2d7d5ea349473f3b
font_01_sfnt_off0000761d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761D 10236 bytes
SHA-256: 763a96a5db3f24d374f6053f360febfa297129de4d62d59ba8ac91199d71257a