Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e14e38f14aeda3…

MALICIOUS

PDF

87.2 KB Created: 2020-10-31 02:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 99152ec5f1d8f61c6b063c1e830e1ad4 SHA-1: 284f43c31d54a6d9f0996b64432ac58d7d5907cd SHA-256: 10e14e38f14aeda3e4533bc4436c06f4f50816149473e1973d1fd4c88d776d92
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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/123?keyword=tara+maclay+comics In PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/9594397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f89cf8af0eda.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/4198643.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/4065645.pdfIn PDF document text
    • https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/795346.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9536/2209/files/tumopipotasukefegufekazaz.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/49621006710.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/swtor_operative_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/93758395126.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/sibofifonopozarofijur.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00011425.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11425 26884 bytes
SHA-256: a2ffe0b69d63dd507c59f46e60fd7ea719ce4261b453a3b1ba97102b505bb0eb
font_00_sfnt_off0000e045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE045 4480 bytes
SHA-256: 90f6651d164b1e428dab30bc1f8b61badee2884b4c97762e41ec383e3156fd63
font_01_sfnt_off0000ef65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF65 10636 bytes
SHA-256: 9e2e0b07d03377f135488a6979fd31d8528508ed5ba8656db84383c6f15ca7dc
font_03_sfnt_off00014157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14157 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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