Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94116d835c8302e…

MALICIOUS

PDF

43.5 KB Created: 2020-08-16 20:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c1bba70e61c88cd79aaa525b8e28758 SHA-1: 8e890523c99e19f6906167a058effaf93fb42976 SHA-256: d94116d835c8302ea9f98be7d8d2c8afc4e72861f7bc8db1e3bb7987d572fbb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a 'present tense of ser and estar worksheet'. This redirector likely leads to further malicious content or exploits. The PDF also contains a large number of links to external PDFs hosted on Shopify, characteristic of a link farm, with the primary purpose of SEO manipulation or distributing malicious content. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggests a phishing or social engineering attack.

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.cc/pify?keyword=present+tense+of+ser+and+estar+worksheet In PDF document text
    • http://sidinaruf.joelsheridan.com/uploads/1/3/2/7/132740249/vikudopinar_rozuragimarota_beluwijidewij_vuzusidekuxa.pdfIn PDF document text
    • http://files.mirrorimagemissions.com/uploads/1/3/0/8/130814758/xilibodofanogob.pdfIn PDF document text
    • http://files.covenantsouthfield.org/uploads/1/3/1/3/131398134/xalematenaj.pdfIn PDF document text
    • http://nemapa.taehohwang.com/uploads/1/3/1/0/131070872/netititejan.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/1/0429/6025/7177/files/norusarabuwabifaluzud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/zilean_aram_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/89247276993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9699/0115/files/daputefodijijunupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/avatharam_video_songs_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2249/1541/files/walking_dead_comic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/age_discrimination_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/giwexupebunuletojeroke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7279/6325/files/badupijufikusevopaweli.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFE 5120 bytes
SHA-256: 9becbbc898447fc52890f2600a908d8bf7083e9208ab7f4cb2806f87218cd3a3
font_01_sfnt_off00007e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 10260 bytes
SHA-256: dce3ed7ef5a59a2da49b40c4646041f77b6014ab2e39bb4a56dff525ee95aa24

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