Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d9a834ac0fa91b…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 19:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7adc7fda522f547e913bc76a99e10e87 SHA-1: 71620533f3be68d669d2ae46d3d847abf1a431df SHA-256: f1d9a834ac0fa91b3ea026ce7ff71c5b3335a5c1196c3af52326179ce43c6bed
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure for 'ssc.nic.in gd constable result 2020 pdf', and the presence of a 'download button' heuristic further supports a phishing or scam attempt. The ML classifier strongly indicates maliciousness.

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=ssc.+nic.+in+gd+constable+result+2020+pdf In PDF document text
    • http://xemewaz.limanawic.com/uploads/1/3/0/7/130740178/4604411.pdfIn PDF document text
    • http://sirefex.hostmaster.ampabages.cat/uploads/1/3/2/6/132682883/1453721.pdfIn PDF document text
    • http://files.leapfrogmountain.com/uploads/1/3/0/8/130874102/db14e7.pdfIn PDF document text
    • http://files.momentsinthepark.com/uploads/1/3/0/7/130739369/jesanovuto_rewixafoto.pdfIn PDF document text
    • http://niwise.ypflyinggroup.com/uploads/1/3/2/3/132303382/lujiw.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/1/0433/8234/1781/files/biomass_electricity_generation_plant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/60905179850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/oxford_advanced_learner_s_dictionary_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/83906596647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/xofebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/lisbon_subway_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/anemia_megaloblastica_embarazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/desinizunezewoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/gutijubedap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/xokojavatubariwup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/fumobepokupodim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/double_bunk_bed_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7245/2776/files/cummins_jetsort_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/76610116215.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_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 5872 bytes
SHA-256: be3da3bc37b283cf9d9f3c7bff75dac12b29f3b7e2c68aec180ba7edb55fd1b9
font_01_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 10416 bytes
SHA-256: d4568d3ed3198f0eca9765b813a51b93e844d829478dd583b7dd2f391ac04103