Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1bc0e2845b8ef92…

MALICIOUS

PDF

57.0 KB Created: 2020-08-12 23:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6075b44bf0894a5cdf06dfb88e5d7ce3 SHA-1: 1ba141831d6740b8a37eb7ab08bc01ee433c7973 SHA-256: f1bc0e2845b8ef9241645450ebe236db7abc43481fb5141c648cd67adb733a67
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to domains associated with SEO spam and link farms. One critical heuristic firing indicates a link to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=ayurveda+books+in+gujarati+pdf+free+download'. This suggests the document's primary purpose is to trick users into clicking malicious links under the guise of providing free PDF downloads, likely leading to further compromise.

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=ayurveda+books+in+gujarati+pdf+free+download In PDF document text
    • http://muxezorag.dmgcvirginia.org/uploads/1/3/0/8/130813528/bitavikasi_satawo_nujiroxi_motumat.pdfIn PDF document text
    • http://files.anncarragher.com/uploads/1/3/2/7/132740685/2518897.pdfIn PDF document text
    • http://manutel.williamlinwriter.com/uploads/1/3/1/3/131383483/kezapivexur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/williams_wall_furnace_reset_button.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/torajomugan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/49732178048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/jijuveluwebilutegodifuwuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/tovugak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/captopril_posologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/18268126679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/kojugatejawuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/d_letter_names_for_girl_hindu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7627/9702/files/22648589605.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_off00006031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6031 5732 bytes
SHA-256: 530543394d08b018bfc02c7de42b1f8b1773061bd6e4d865c6586177de55da70
font_01_sfnt_off000073e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 9828 bytes
SHA-256: 9bd2b16adb4317a78cce445b3ee779089d471e5a8727f6a3ce3716935acb00f0
font_02_sfnt_off00009345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9345 13220 bytes
SHA-256: 3f6a090959b1637c3c412f5d57780b5a50a03d3eaef82d731b18388b386f17d5
font_03_sfnt_off0000bdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB5 7276 bytes
SHA-256: a5e968a90b9cbe004adf086b5fe3a74242a269d20b4a299e6fbbef79864146a5