Malicious PDF — malware analysis report

Static analysis result for SHA-256 147a86a556737590…

MALICIOUS

PDF

44.6 KB Created: 2020-08-25 01:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d034c9673e4716b91f875e0d61f44db9 SHA-1: 7351d2a04b3b4ef3320174ba7c56430a8d86a699 SHA-256: 147a86a55673759004700f745746c6d3d288fda74ce3f832be565164dabbc23a
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one identified as a malicious redirector, which is likely intended to lead the user to a malicious site. The document body text, though partially corrupted, suggests a lure for a movie download, aligning with phishing or scam tactics. The presence of embedded URLs and the critical heuristic firing for a malicious redirector strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=cast+away+full+movie++tamil+dubbed
    • http://files.sultanjihadahmadfoundation.org/uploads/1/3/1/4/131407423/fc72e189b6910d4.pdf
    • http://files.sandpiperstudio-photographybychristine.com/uploads/1/3/1/3/131380063/nowugej.pdf
    • http://files.dancevibessf.com/uploads/1/3/0/7/130739646/d3c59e.pdf
    • http://files.mikevapes.com/uploads/1/3/1/4/131454034/5e02b43af0b9bc.pdf
    • http://fedorahosted.org/lohit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/59136505206.pdf
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/6507948358.pdf
    • https://cdn.shopify.com/s/files/1/0439/7996/4574/files/10013627728.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/80614096791.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/sirolukarowavamusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/96773360916.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/33029052619.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/pdf_bjt_transistor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/97577403241.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/koxebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/bukemoxitedimubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/firipodutodijowinizasepud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/fixigixatuxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6245/0586/files/22451928449.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/bubble_sort_vector_c.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00006133.bin
d9e6b1215a330e1bb8d681a87ee1c8a08ff0d2aff00140bf91194dad0704cf2d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6133 13656 bytes
font_00_sfnt_off00004f49.bin
7a06710236e75bcaa60e35baf77b800ac74b14a3c9df06a03b4992ff1039b544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F49 5256 bytes
font_02_sfnt_off000081db.bin
b0016bf9772c26be16d2774a2437f7db5ee84b8a3f0d7ee48f1b667352bc26f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81DB 10260 bytes

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