Malicious PDF — malware analysis report

Static analysis result for SHA-256 af4975cc627f6631…

MALICIOUS

PDF

55.2 KB Created: 2020-08-11 15:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c3e8f2b7fe7d2c346f80e7a2b5b26b3 SHA-1: 059cedd5ab9b029ae4a8e47c3818f263cba83528 SHA-256: af4975cc627f6631bb4dd39bb67fc0cfc92de799393fd7cfcfa384583bc43b24
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=union+budget+2020+pdf+download+upsc'. This indicates the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm tactic, aiming to attract users searching for specific documents. No scripts were extracted from this sample.

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=union+budget+2020+pdf+download+upsc In PDF document text
    • http://files.ridgeroasters.com/uploads/1/3/1/6/131606046/xowufe.pdfIn PDF document text
    • http://files.realblackwolf.com/uploads/1/3/1/4/131438570/mibowukuzeteru_ronitep_jebumobisegutap_wofobinugoka.pdfIn PDF document text
    • http://files.eastasiair.com/uploads/1/3/1/3/131398250/63cf45368.pdfIn PDF document text
    • http://files.tinagutierrezartsphotography.com/uploads/1/3/1/4/131437750/gikuwovirufejom.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/1/0438/1910/6466/files/la_pasion_segun_antigona_perez_luis_rafael_sanchez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/gimilide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/bautismo_en_agua_cristiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/altruism_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/vifasevuzebifonitaretevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/zubirirokejuriwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/99473088146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/97927995438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/jiniko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7138/1405/files/losalarevepime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodupenewizaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1322/6143/files/67272402845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/applied_software_measurement_capers_jones.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B0 5724 bytes
SHA-256: e677489b82bfb3a7f9518199dfbd341488a2e8aad70c99145b62d0918adb7a2d
font_01_sfnt_off00009651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9651 10372 bytes
SHA-256: 70250287a6a52b329bb63710f4665edb7845f3b733e0935dd720a1f2a844e3fe
font_02_sfnt_off0000b9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F4 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6