Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba7a0cad397bf0b…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 02:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b08436eb1951a0cbd09f81dd6eaf4da SHA-1: 48134d937bd72d37d223ef4b4420fd057fc3ff62 SHA-256: 0ba7a0cad397bf0b21ef916e663cd3bcfeebc6070926f13ac700e067dfecdd42
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one critical heuristic firing indicating a redirector to malicious infrastructure. The document body, though partially corrupted, contains text suggesting a lure for a datasheet, which is further supported by the SEO link farm heuristic. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword that appears to be a phishing lure.

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.ru/pify?keyword=asure+id+exchange+datasheet In PDF document text
    • http://zuzusit.maryzambello.com/uploads/1/3/1/6/131606666/8190874.pdfIn PDF document text
    • http://mapojuki.olgaklosowski.com/uploads/1/3/0/8/130813306/9068635.pdfIn PDF document text
    • http://files.snugnut.com/uploads/1/3/1/0/131070035/6416fab392091ad.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/1/0431/2052/5469/files/biology_o_level_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/black_and_decker_grass_hog_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3371/3829/files/cross_platform_games_xbox_one_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/accounting_for_management_control_emmanuel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2279/0305/files/world_map_with_names_of_countries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6209/1167/files/88761924186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/wixudaxufuvupusogavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1560/9243/files/allianz_travel_insurance_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8830/5558/files/1828247783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7466/7164/files/kafeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7453/3014/files/65736792289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/clearface_bold_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/86132101214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/how_to_use_vimdiff.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/48380228581.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_off0000688a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688A 5228 bytes
SHA-256: 45a8b2d5c9096dcf1fd5d641273a49eb630b895e7a19c4181c7a488bc59469f8
font_01_sfnt_off00007a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A47 10496 bytes
SHA-256: d1a9fad8ab8a38772ab8eacfccca0596c3424e69c173f1e0797a78ed8bfa0dd9